SYNOPSIS
CH-47-94-ASAM-01 AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY,
CH-47D, MH-47D, MH-47E ONE TIME AND RECURRING INSPECTIONS
OF ROTARY WING HEAD BUSHINGS, (TB 1-1520-240-20-67).
191815Z OCT 93, LYELL MYERS, AMSAT-C-XS, X2258.
NOTE: Enter a "Q" + <CR> to exit or <SPACEBAR> to view
the entire message. (REPORTING)
.
01 21 191815Z OCT 93 PP PP UUUU
FROM
:CDRATCOM ST LOUIS MO//AMSAT-C-XS//
TO
:AIG 6713
:AIG 9004
:AIG 8708
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:DEFARM CANBERRA AS//DOR-A//
:DEFNAV CANBERRA AS
:CDRUSARDSG CANBERRA AS
:LOGCON OTTAWA CAN//DTHEM 6-2//
:EGYPT AF FMS CAIRO EG//ED-MA//
:USOMC CAIRO EG//AV//
:ODC ATHENS GR//ODCSA//
:CDR4THBN228THAVN SOTO CANO HO//AVN-AMO//
:CHJUSMAG SEOUL KOR//MKAR//
:HQROKA TAEJON KOR//DCSLOG-AVIATION/ROKA-AVIATON//
:ROK ARMY FMS PUSAN KOR//ALC-LSD-L//
:CDR160TH SOAR FT CAMPBELL KY//AOAV-SI//
:CDRBGAD RICHMOND KY//SDSBG-GC//
:USDAO RABAT MO//AF//
:CHUSAS RIYADH SA//ASAV//
:ODC MADRID SP//ASM//
:AIT TAIPEI TW
:CJUSMAG THAI BANGKOK TH//MAGTAR-FS//
:CDRUSARDSG LONDON UK//AMXSN-UK-SE//
:ODC LONDON UK
INFO
:CDRAMCCOM ROCK ISLAND IL//AMSAR-QAS-P//
:CDRAMC ALEXANDRIA VA//AMCMR/AMCCS/AMCSM-WAA//
XMT
:USDAO DHAKA BG
:USDAO RANGOON BM
:USDAO COLOMBO CE
:USDAO SUVA FJ
:OMADP JAKARTA ID
:DSA NEW DELHI IN
:USDAO ANTANANARIVO MA
:CDRATCOM ST LOUIS MO//AMSAT-C-XS//
:SAO KUALA LUMPUR MY
:USDAO KATMANDU NP//SAO//
:USDAO SINGAPORE SN//SAO//
ACCT
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TEXT
:UNCLAS
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY,
RCS CSGLD-1860(R1), CH-47D, MH-47D, MH-47E ONE-TIME AND RECURRING
INSPECTIONS OF ROTARY WING HEAD BUSHINGS (CH-47-94-ASAM-01) (TB
1-1520-240-20-67).
NOTE - THIS IS AN AVIATION SAFETY ACTION MESSAGE AND HAS NOT BEEN
TRANSMITTED TO UNITS SUBORDINATE TO ADDRESSEES. ADDRESSEES SHOULD
IMMEDIATELY RETRANSMIT THIS MESSAGE TO ALL SUBORDINATE UNITS,
ACTIVITIES OR ELEMENTS AFFECTED OR CONCERNED. THE RETRANSMITTAL
SHALL REFERENCE THE MESSAGE. ACTION ADDRESSES WILL IMMEDIATELY
VERIFY THIS RETRANSMISSION TO COMMANDER, ATCOM, ATTN - AMSAT-C-XSOF
(SOF COMPLIANCE OFFICER).
1. PRIORITY CLASSIFICATION -
A. AIRCRAFT IN USE - UPON RECEIPT OF THIS MESSAGE THE
CONDITION STATUS SYMBOL OF THE CITED AIRCRAFT WILL BE CHANGED TO A
RED HORIZONTAL DASH //-//. THE RED HORIZONTAL DASH //-// MAY BE
CLEARED WHEN THE INSPECTION OF PARA 8 BELOW IS COMPLETED. THE
AFFECTED AIRCRAFT SHALL BE INSPECTED AS SOON AS PRACTICAL BUT NO
LATER THAN THE TASK/INSPECTION SUSPENSE DATE. FAILURE TO COMPLY
WITH THE REQUIREMENTS OF THIS MESSAGE WITHIN THE TIME FRAME WILL
CAUSE THE STATUS SYMBOL TO BE UPGRADED TO A RED //X//.
B. AIRCRAFT IN DEPOT MAINTENANCE - AIRCRAFT WILL NOT BE ISSUED
UNTIL COMPLIANCE WITH THIS ASAM HAS BEEN COMPLETED.
C. AIRCRAFT UNDERGOING MAINTENANCE - SAME AS PARA 1A.
D. AIRCRAFT IN TRANSIT -
(1) SURFACE/AIR SHIPMENT - PRIOR TO FIRST FLIGHT.
(2) FERRY STATUS - INSPECT AT FINAL DESTINATION.
(3) THOSE AIRCRAFT THAT HAVE A DD250 AND ARE AT BOEING
HELICOPTER COMPANY WILL BE INSPECTED PRIOR TO FERRY TO FINAL
DESTINATION.
E. MAINTENANCE TRAINERS (CATEGORY A, B AND C) - COMPLY WITHIN
30 DAYS OF RECEIPT OF THIS MESSAGE.
F. COMPONENT/PARTS IN STOCK INCLUDING WAR RESERVES AT ALL
LEVELS (DEPOT AND OTHERS) - N/A.
2. TASK/INSPECTION SUSPENSE DATE - WITHIN 20 HOURS/20 DAYS OR
PRIOR TO INSTALLATION OF ROTARY WING HEAD ASSEMBLY P/N 145R2003-9
AND 145R2004-18.
3. REPORTING COMPLIANCE SUSPENSE DATE - REPORT COMPLIANCE TO
COMMANDER, ATCOM, ATTN: AMSAT-C-XS NO LATER THAN 3 NOV 93 PER PARA
14A OF THIS MESSAGE.
4. SUMMARY OF PROBLEM -
A.
(1) FIELD INSPECTIONS HAVE REVEALED IN SOME INSTANCES THAT
ROTARY WING HEAD BUSHINGS (P/N 145R3116-10) HAVE BECOME LOOSE.
THESE BUSHINGS ARE INSTALLED IN THE UPPER LAG DAMPER LUG OF THE
PITCH HOUSING. LOOSE BUSHINGS CAN CAUSE EXCESSIVE WEAR IN THE LUGS
WHICH COULD RESULT IN HAVING TO SCRAP HIGH COST PITCH HOUSINGS.
(2) THE LOOSE BUSHINGS ARE THE RESULT OF DEFECTIVE
INSTALLATIONS. INSTALLATIONS WERE PERFORMED BY RETROFIT PER MWO
1-1520-240-50-37 OR CONVERTED IN PRODUCTION OR AT OVERHAUL.
(3) THE NEW CONFIGURATION, MWO 1-1520-240-50-37, WAS
INSTITUTED BECAUSE FIELD REPORTS INDICATED THAT THE BUSHING P/N
114R2096-2 WAS SOMETIMES LEFT OUT OF THE LOWER LUG OF THE PITCH
HOUSING. IF THE BUSHING P/N 114R2096-2 IS NOT PRESENT DURING
TORQUE-UP OF THE LAG DAMPER, IT COULD RESULT IN BENDING THE PITCH
HOUSING LUGS WHICH WOULD CAUSE SCRAPPING THE PART, AND PERHAPS
CRACKING OR BREAKING THE LUGS.
B. FOR MANPOWER/DOWNTIME AND FUNDING IMPACTS SEE PARA 12.
C. THE PURPOSE OF THIS MESSAGE IS TO INSPECT ALL AIRCRAFT WHICH
HAVE UPPER BUSHINGS, P/N 145R3116-10, TO CORRECTLY REINSTALL ALL
UPPER BUSHINGS THAT HAVE SLIPPED, AND TO REQUIRE RECURRING
INSPECTIONS. IF ANY BUSHINGS HAVE SLIPPED, ALL BUSHINGS IN THAT
ROTOR HEAD SHOULD BE INSPECTED.
5. END ITEMS TO BE INSPECTED - ALL CH-47D, MH-47D, AND MH-47E
AIRC NSN
FORWARD PITCH HOUSING 145R2075-13 3040-01-307-8963
AFT PITCH HOUSING 145R2075-14 3040-01-307-8964
FORWARD ROTARY WING HEAD ASSY 145R2003-9 1615-01-314-8863
AFT ROTARY WING HEAD ASSY 145R2004-18 1615-01-315-3972
7. PARTS TO BE INSPECTED -
NOMENCLATURE PART NO. NSN
BUSHING 145R3116-10 3120-01-323-5235
8. INSPECTION PROCEDURES -
A. PERFORM THE FOLLOWING INSPECTION ON ALL ROTOR HEADS P/N
145R2003-9 AND P/N 145R2004-18. THE TOOL P/N B39584 NEEDED TO
PERFORM THE INSPECTION IN PARAGRAPHS (3) AND (4) SHALL BE PROVIDED
BY THE LOGISTICAL POINT OF CONTACT. (ONE TOOL PER CHINOOK UNIT).
(1) VISUALLY INSPECT BUSHING 145R3116-10, THREE PLACES PER
HEAD, FOR SECURITY ON THE PITCH HOUSING/LAG DAMPER ASSEMBLY.
(2) IF ANY BUSHING ON A HEAD IS LOOSE OR DISPLACED ABOVE
THE TOP SURFACE OR BELOW THE BOTTOM SURFACE OF THE UPPER LUG,
PROCEED TO THE CORRECTION PROCEDURES IN PARA 9.
(3) PLACE THE TOOL P/N B39584 ON THE BOLT/BUSHING SHANK
BETWEEN BOLT/BUSHING HEAD P/N 145R3650-4 AND THE UPPER SURFACE OF
THE PITCH HOUSING/LAG DAMPER LUG AND CHECK FOR TOOL SNUGNESS. THE
TOOL SHALL BE USED AS A GO-NO-GO GAGE. NOT FIT
ON/AROUND THE BOLT/BUSHING SHANK, ASSUME THE BUSHING P/N 145R3116-10
IS LOOSE AND PROCEED TO THE CORRECTION PROCEDURES IN PARA 9. IF THE
TOOL FITS SNUG, ASSUME THE BUSHING P/N 145R3116-10 IS SECURE AND
PROCEED TO THE NEXT PARA.
(4) PLACE THE TOOL P/N B39584 ON THE BOLT/BUSHING SHANK P/N
145R3650-4 BETWEEN THE LOWER SURFACE OF THE UPPER PITCH HOUSING /LAG
DAMPER LUG AND THE WASHER P/N 234R2205-1 (FOR ASSEMBLIES WITH TEFLON
LAG DAMPER BEARINGS) OR ON TOP OF THE BLADE LAG SHOCK ABSORBER P/N
114H6800 (FOR ASSEMBLIES WITHOUT WASHER P/N 234R2205-1) AND CHECK
FOR TOOL SNUGNESS. THE TOOL SHALL BE USED AS A GO-NO-GO GAGE. IF
TOOL DOES NOT FIT ON/AROUND THE BOLT/BUSHING SHANK P/N 145R3650-4,
PROCEED TO THE CORRECTION PROCEDURES IN PARA 9. IF TOOL FITS SNUG,
THE INSPECTION IS COMPLETE.
NOTE
IF THE BUSHINGS HAVE SLIPPED, YOU HAVE 5 FLIGHT HOURS TO CORRECT
THE PROBLEM.
B. ANNOTATE DA FORM 2408-13-1 THAT REINSPECTION IS REQUIRED
AFTER THE 25TH, 50TH, AND 100TH FLIGHT HOUR.
9. CORRECTION PROCEDURES -
A. REMOVE BLADES FROM THE PARTICULAR ROTARY WING HEAD ASSEMBLY
EFFECTED BY INSPECTION PROCEDURES IN PARA 8, TASK 5-64 OF REF 13.
NOTE
IF BUSHING P/N 145R3116-10 REMAINS INTACT WITH BOLT/BUSHING P/N
145R3650-4 DURING DISASSEMBLY, REMOVE BUSHING P/N 145R3116-10 FROM
BOLT SHANK BY HAND FORCE ONLY. IF BUSHING P/N 145R3116-10 DOES NOT
COME LOOSE BY HAND, CONTACT LOGISTICAL POINT OF CONTACT FOR
DISPOSITION INSTRUCTIONS, (REQUISITION REPLACEMENT PARTS).
B. REMOVE ALL BOLT ASSEMBLIES P/N 145R3650-4 FROM PITCH
HOUSING/LAG DAMPER ASSEMBLY IAW TM 55-1520-240-23, TASK 5-87.
NOTE
IF BOLT/BUSHING ASSEMBLY P/N 145R3650-4 IS REPLACED FOR ANY OF THE
FOLLOWING REASONS, CONTACT LOGISTICAL POINT OF CONTACT FOR
DISPOSITION INSTRUCTIONS.
(1) VISUALLY INSPECT THE BOLT/BUSHING P/N 145R3650-4
ASSEMBLY FOR SERVICEABILITY.
(2) REPLACE ANY BOLT ASSEMBLIES P/N 145R3650-4 THAT ARE
FOUND TO HAVE SCORING OR OTHER DAMAGE ON THE BOLT SHANK OR ON THE
BUSHING OUTSIDE DIAMETER.
(3) IF BUSHING COMES DETACHED FROM BOLT ASSEMBLY, REPLACE
BOLT/BUSHING P/N 145R3650-4.
(4) MEASURE BOLT/BUSHING P/N 145R3650-4 OUTSIDE DIAMETER.
REPLACE BOLT/BUSHING IF OUTSIDE DIAMETER EXCEEDS 0.875 INCHES.
C. REMOVE ALL BUSHINGS P/N 145R3116-10 FROM THE PITCH HOUSING
ASSEMBLY.
WARNING
WEAR PROTECTIVE GLOVES WHEN HANDLING HEATED PARTS.
CAUTION
DO NOT COMPRESS OR SPREAD UPPER AND LOWER PITCH HOUSING LUGS.
(1) IF NECESSARY, HEAT THE ATTACHING LUG ON THE PITCH
HOUSING ASSEMBLY FOR A MAXIMUM OF 30 MINUTES USING A HEAT GUN. THEN
REMOVE BUSHING P/N 145R3116-10 FROM THE PITCH HOUSING ASSEMBLY.
CAUTION
DO NOT USE PETROLEUM BASED CLEANING SOLVENT.
WARNING
ACETONE IS FLAMMABLE AND TOXIC. GOOD GENERAL VENTILATION IS
NORMALLY ADEQUATE. SKIN AND EYE PROTECTION IS REQUIRED.
AVOID ALL SOURCES OF IGNITION.
(2) CLEAN BUSHING P/N 145R3116-10 USING A CLEAN CLOTH WET
WITH ACETONE (O-A-51) AND REMOVE ANY EXISTING ZINC CHROMATE PROMER
OR SEALING COMPOUND.
(3) INSPECT BUSHING P/N 145R3116-10 FOR SERVICEABILITY.
MEASURE OUTSIDE DIAMETER OF BUSHING. IF BUSHING OUTSIDE DIAMETER IS
LESS THAN .9365 INCHES, DISCARD BUSHING AND REQUISITION REPLACEMENT
BUSHING.
CAUTION
DO NOT USE PETROLEUM BASED CLEANING SOLVENT.
WARNING
ACETONE IS FLAMMABLE AND TOXIC. GOOD GENERAL VENTILATION IS
NORMALLY ADEQUATE. SKIN AND EYE PROTECTION IS REQUIRED.
AVOID ALL SOURCES OF IGNITION.
(4) USING A CLEAN CLOTH WET WITH ACETONE (O-A-51) TO CLEAN
UPPER LUG BUSHING BORES AND TO REMOVE ANY EXISTING ZINC CHROMATE
PRIMER OR SEALING COMPOUND.
(5) INSPECT THE UPPER LUG BORE IN THE PITCH HOUSING
ASSEMBLY FOR FRETTING AND CLEANLINESS.
(6) USING SCOTCH-BRITE WET WITH ACETONE, LIGHTLE PITCH HOUSING ASSEMBLY TO REMOVE
ANY DEBRIS OR FRETTING.
(7) TOUCH-UP REWORKED AREA WITH BRUSH ALODIZE (CHEMICAL
FILM COATING) IN ACCORDANCE WITH MIL-C-5541.
(8) MEASURE THE UPPER BUSHING BORE ON THE PITCH HOUSING
ASSEMBLY AT TWO POINTS 90 DEGREES APART. ONE READING SHALL BE TAKEN
PARALLEL TO THE BLADE. IF THE BORE EXCEEDS ITS MAXIMUM DIMENSION,
REJECT THE ROTARY WING HEAD ASSEMBLY. THE MAXIMUM DIMENSION FOR THE
BORE IS 0.939 INCH MAXIMUM (POINT NINE-THREE-NINE). REQUISITION
REPLACEMENT HEAD AND NOTIFY LOGISTICAL POINT OF CONTACT FOR ANY
REJECTED ROTARY WING HEAD ASSEMBLIES.
(9) CLEAN BUSHING P/N 145R3116-10 OUTSIDE DIAMETER AND
BOLT/BUSHING P/N 145R3650-4 USING A CLEAN CLOTH WET WITH ACETONE.
(10) USING A 145R3650-4 BOLT (SECURE THE PAWL IN A CLOSED
POSITION) INSTALL THE BUSHING P/N 145R3116-10 ON THE BOLT.
(11) RECLEAN OUTER SURFACE OF BUSHING P/N 145R3116-10
USING A CLEAN CLOTH WET WITH ACETONE.
NOTE
AIR DRY PRIMER/ACTIVATOR FOR 5 MINUTES PRIOR TO APPLICATION
OF LOCKING COMPOUND.
(12) COAT THE OUTER SURFACE OF THE BUSHING WITH
PRIMER/ACTIVATOR (MIL-S-22473) GRADE T, AND ALLOW TO AIR DRY.
NOTE
AIR DRY PRIMER/ACTIVATOR FOR 5 MINUTES PRIOR TO APPLICATION
OF LOCKING COMPOUND.
(13) COAT THE UPPER PITCH HOUSING ASSEMBLY P/N 145R2075
LUG BORE WITH PRIMER/ACTIVATOR (MIL-S-22473) GRADE T AND ALLOW TO
AIR DRY.
CAUTION
THE UPPER LUG MUST BE AT ROOM TEMPERATURE WHEN THE LOC-TITE
#635 IS APPLIED.
NOTE
ONCE ADHESIVE IS APPLIED OVER PRIMER ACTIVATOR, PARTS MUST BE
JOINED WITHIN 4 MINUTES. IF THIS TIME IS EXCEEDED PARTS MUST BE
CLEANED AND RETREATED WITH PRIMER AND ADHESIVE.
(14) COAT THE UPPER LUG BORE OF THE PITCH HOUSING ASSEMBLY
P/N 145R2075 WITH LOC-TITE #635 (MIL-R-46082) RETAINING COMPOUND.
NOTE
ENSURE O.D OF BUSHING SURFACE DOES NOT CONTAIN ANY CONTAMINATES WHEN
INSTALLING THE BOLT/BUSHING INTO THE LUG. IF BUSHING DOES NOT
SEAT WITH HAND FORCE, LIGHTLY TAP THE HEAD OF THE BOLT WITH A
PLASTIC MALLET UNTIL BUSHING IS SEATED. ENSURE BUSHING P/N
145R3116-10 IS NOT PROTRUDING BEYOND THE UPPER OR LOWER SURFACE OF
THE PITCH HOUSING LUG.
CAUTION
DO NOT APPLY HEAT OR CHILL DURING INSTALLATION OF BUSHINGS.
(15) INSTALL BUSHING/BOLT INTO THE UPPER LUG BORE OF THE
PITCH HOUSING ASSEMBLY P/N 145R2075. USE CAUTION TO ENSURE THAT THE
BUSHING P/N 145R3116-10 DOES NOT SEPARATE FROM BOLT DURING
INSTALLATION.
NOTE
PLACE A SIX INCH SCALE OR STRAIGHT EDGE ACROSS THE TOP FACE OF
THE UPPER LUG BORE ON THE PITCH HOUSING ASSEMBLY TO ENSURE THAT THE
BUSHING IS NOT PROTRUDING ABOVE THE SURFACE. REPEAT THE ABOVE
INSTRUCTIONS FOR THE BOTTOM SURFACE.
(16) LEAVE THE BUSHING P/N 145R3116-10 IN THE PITCH
HOUSING ASSEMBLY P/N 145R2075 LUG FOR A MINIMUM OF 10 MINUTES BEFORE
REMOVING THE BOLT P/N 145R3650-4.
(17) IF AFTER DRYING EITHER TOP OR BOTTOM IS FOUND
PROTRUDING BEYOND THE SURFACE, REMOVE BUSHING AND REPEAT
INSTALLATION PROCEDURES IN ACCORDANCE WITH PARAGRAPH 9.C. THROUGH
PARAGRAPH 9.C.(16).
CAUTION
LOC-TITE MATERIAL DOES NOT CURE SUFFICIENTLY AT TEMPERATURE
BELOW 40 DEGREES F.
(18) DO NOT SUBJECT JOINED PARTS TO HANDLING, VIBRATION OR
SHOCK UNTIL FULLY CURED. ALLOW BUSHING INSTALLATION TO CURE FOR A
MINIMUM OF 72 HOURS AT 40 DEGREES TO 69 DEGREES F OR A MINIMUM OF 24
HOURS AT 70 DEGREES F AND ABOVE.
(19) CLEAN INSIDE DIAMETER OF BUSHING P/N 145R3116-10,
UPPER AND LOWER FACES OF THE PITCH HOUSING ASSEMBLY LUG, AND BOLT
P/N 145R3650-4 WITH A CLEAN CLOTH WET WITH A CLEANING AGENT LISTED
ABOVE, OR EQUIVALENT.
(20) APPLY A LIGHT COAT OF ANTISEIZE COMPOUND
(MIL-T-83483) TO BOLT/BUSHING P/N 145R3650-4. WIPE OFF EXCESS TO
ENSURE ONLY A LIGHT FILM OF ANTISEIZE COMPOUND IS ON THE
BOLT/BUSHING. DO NOT APPLY ANTISEIZE COMPOUND TO THREADS.
(21) INSTALL ROTOR BLADES, TASK 5-84, REF 13.
(22) INSTALL BOLT/BUSHING P/N 145R3650-4, WASHER P/N
MS20002-12 (1 UNDER NUT), NUT P/N AN320-12, BLADE LAG SHOCK ABSORBER
ASSY P/N 114H6800.
(23) USE WASHERS P/N 234R2205-1 FOR TEFLON LAG DAMPER
BEARINGS ONLY.
(24) TORQUE NUT P/N AN320-12 TO 100-135 FT-LBS, AND
INSTALL COTTER PIN P/N MS24665-376.
10. SUPPLY/PARTS AND DISPOSITION -
A. PARTS REQUIRED - ITEMS CITED IN PARAS 6 AND 7 MAY BE
REQUIRED TO REPLACE DEFECTIVE ITEMS.
B. REQUISITIONING INSTRUCTIONS - REQUISITION REPLACEMENT PARTS
THROUGH NORMAL SUPPLY CHANNELS USING NORMAL SUPPLY PROCEDURES.
MANDATORY ENTRIES ON REQUISITIONS AND TURN-IN DOCUMENTS ARE:
ALL REQUISITIONS SHALL USE PROJECT CODE "CS8" PER THIS MESSAGE.
NOTE
PROJECT CODE "CS8" IS REQUIRED TO TRACK SOF COSTS IN AN ATTEMPT
TO ESTABLISH A FUTURE FUND TO REIMBURSE UNITS FOR STOCK FUND
EXPENDITURES CREATED BY SOF MESSAGES.
C. BULK AND CONSUMABLE MATERIALS -
NOMENCLATURE NSN
LOCQUIC PRIMER T 8030-00-082-2508
LOC-TITE NUMBER 635 8030-00-181-7603 (50 ML)
ACETONE (O-A-51) 6810-01-003-0262 (1 GAL)
CHEMICAL FILM (MIL-C-5541) 8030-00-142-9272 (1
PINT)
ANTISEIZE COMPOUND 8030-00-087-8630
D. DISPOSITION - DISPOSE OF REMOVED PARTS/COMPONENTS IN
ACCORDANCE WITH NORMAL SUPPLY PROCEDURES. A QDR IS NOT REQUIRED.
E. DISPOSITION OF HAZARDOUS MATERIAL - N/A.
11. SPECIAL TOOLS, JIGS AND FIXTURES REQUIRED -
NOMENCLATURE P/N NSN
PULLER KIT A57QB 5180-00-089-3660 OR EQUIV
GO-NO-GO GAGE B39584 (MAKE ITEM)
12. APPLICATION -
A. CATEGORY OF MAINTENANCE - AVUM WITH AVIM ASSISTANCE AS
REQUIRED. AIRCRAFT DOWNTIME WILL BE CHARGED TO AVUM.
B. TIME REQUIRED -
(1) FOR VISUAL INSPECTION RECORDING/REPORTING 2 MANHOURS
PER AIRCRAFT.
(2) FOR BLADE REMOVAL AND INSTALLATION A TOTAL OF 6
MANHOURS USING 3 PERSONS, PER AIRCRAFT.
(3) FOR REPAIR A TOTAL OF 4 MANHOURS USING 2 PERSONS.
(4) FOR CURE TIME APPROXIMATELY 24 TO 72 HOURS.
(5) MAXIMUM OF 80 HOURS DOWNTIME FOR ONE END ITEM.
C. ESTIMATED COST IMPACT OF STOCK FUND ITEMS TO THE FIELD -
NOMENCLATURE PART NO. NSN QUANTITY COST EA. TOTAL
BOLT 145R3650-4 5306-01-328-5726 6 66.21 397.26
BUSHING 145R3116-10 3120-01-323-5235 6 12.40 74.64
TOTAL COST PER AIRCRAFT = 471.90
D. TB/MWOS TO BE APPLIED PRIOR TO OR CONCURRENTLY WITH THIS
INSPECTION - N/A.
E. PUBLICATIONS WHICH REQUIRE CHANGE AS A RESULT OF THIS
INSPECTION:
NOTE
PEN AND INK CHANGES TO AFFECTED PUBLICATIONS IS AUTHORIZED UNTIL
RECEIPT OF OFFICIAL CHANGES.
(1) MWO 1-1520-240-50-37 AND DMWR 55-1615-296 SHALL BE
CHANGED TO REFLECT THIS MESSAGE. A COPY OF THIS MESSAGE SHALL BE
INSERTED IN THE APPROPRIATE TM AS AUTHORITY TO IMPLEMENT THE CHANGE
UNTIL THE PRINTED CHANGE IS RECEIVED.
(2) TM 55-1520-240-23:
(A). FOR TM 55-1520-240-23-1. SPECIAL INSPECTION,
TASK 1-92. PRIOR TO INSTALLATION OF ROTARY WING HEAD ASSY P/N
145R2003-9 (FORWARD) AND/OR P/N 145R2004-18 (AFT), VISUALLY INSPECT
BUSHING P/N 145R3116-10 FOR SLIPPING/LOOSENESS AT INSTALLATION, AND
AT 25, 50, AND 100 HR INTERVALS.
(B). FOR TM 55-1520-240-23-4. TASK 5-93, PAGE 5-346,
PARA 7-5, CHANGE TORQUE FROM 110 TO 250 FT-LBS TO TORQUE NUT 100 TO
135 FT-LBS.
(3) TM 55-1520-240-PM:
(A). ADD PARA 7.31.1, PAGE 2-45. USING TOOL P/N
B39584, INSPECT AFT ROTARY WING HEAD ASSEMBLY P/N 145R2004-18 LAG
DAMPER PITCH HOUSING BUSHING 145R3116-10 TO ENSURE IT HAS NOT
SLIPPED OR COME LOOSE.
(B). ADD PARA 6.5.1, PAGE 2-30. USING TOOL P/N
B39584, INSPECT FORWARD ROTARY WING HEAD ASSEMBLY P/N 145R2003-9 LAG
DAMPER PITCH HOUSING BUSHING 145R3116-10 TO ENSURE IT HAS NOT
SLIPPED OR COME LOOSE.
13. REFERENCES - TM 55-1520-240-23-4, AVIATION UNIT AND
INTERMEDIATE MAINTENANCE MANUAL, ARMY MODEL CH-47D HELICOPTER, DTD 6
MAY 83, C27 30 SEP 92.
14. RECORDING AND REPORTING REQUIREMENTS -
A. REPORTING COMPLIANCE SUSPENSE DATE (AIRCRAFT) - UPON
ENTERING REQUIREMENTS OF THIS MESSAGE ON DA FORM 2408-13-1 ON ALL
SUBJECT MDS AIRCRAFT, FORWARD A PRIORITY MESSAGE, DATAFAX OR E-MAIL
TO COMMANDER, ATCOM, ATTN: AMSAT-C-XS (SOF COMPLIANCE OFFICER), PER
AR 95-3. DATAFAX NUMBER IS DSN 693-2064 OR COMMERCIAL 314/263-2064.
E-MAIL ADDRESS IS "AMSATCXS (AT SIGN) ST-LOUIS-EMH4.ARMY.MIL". THE
REPORT WILL CITE THIS MESSAGE NUMBER, DATE OF ENTRY IN DA FORM
2408-13-1, THE AIRCRAFT MISSION DESIGN SERIES AND SERIAL NUMBERS OF
AIRCRAFT IN NUMERICAL ORDER.
B. THE FOLLOWING FORMS ARE APPLICABLE AND ARE TO BE COMPLETED
IN ACCORDANCE WITH DA PAM 738-751, 15 JUN 92.
(1) DA FORM 2408-5-1, EQUIPMENT MODIFICATION RECORD
(ROTARY WING HEAD ASSEMBLY).
(2) DA FORM 2408-13, AIRCRAFT STATUS INFORMATION RECORD.
(3) DA FORM 2408-13-1, AIRCRAFT INSPECTION AND MAINTENANCE
RECORD.
(4) DA FORM 2408-13-2, RELATED MAINTENANCE ACTIONS RECORD.
(5) DA FORM 2408-16, AIRCRAFT COMPONENT HISTORICAL RECORD,
IF REPLACEMENT OF ROTARY WING HEAD ASEMBLY IS REQUIRED.
(6) DA FORM 2410, COMPONENT REMOVAL AND REPAIR/OVERHAUL
RECORD (NORMAL REMOVAL, EVACUATION, REPAIR, AND INSTALLATION CYCLE)
COMPLETE DA FORM 2410 IF REPLACEMENT OF ROTAR WING HEAD ASSEMBLY IS
REQUIRED.
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. MIKE
WRIGHT, AMSAT-R-ECC, DSN 693-3820 OR COMMERCIAL 314/263-3820.
B. LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. NORM
HUSTON, SFAE-AV-CH-T, DSN 693-1415 OR COMMERCIAL 314/263-1415.
C. FORMS AND RECORDS POINT OF CONTACT FOR THIS MESSAGE IS MRS.
ANN WALDECK, AMSAT-I-MDM, DSN 693-1821 OR COMMERCIAL 314/263-1821.
D. POINT OF CONTACT FOR THIS MESSAGE IS MR. LYELL MYERS,
AMSAT-C-XS, DSN 693-2258 OR COMMERCIAL 314/263-2258.
E. FOREIGN MILITARY SALES (FMS) RECIPIENTS REQUIRING
CLARIFICATION OF ACTION ADVISED BY THIS MESSAGE SHOULD CONTACT MR.
RON VAN REES, AMSAT-IOA, DSN 693-2 626 OR COMMERCIAL 314/263-2626.
F. AFTER HOURS CONTACT ATCOM COMMAND OPERATIONS CENTER (COC)
DSN 693-2066/7 OR COMMERCIAL 314/263-2066/7.