01 13 282043Z APR 98 PP PP UUUU AA ZYUW
FROM
CDRAMCOM REDSTONE ARSENAL AL//AMSAM-SF-A//
TO
AIG 8881
TEXT
UNCLAS
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY, RCS
CSGLD-1860(R1), ALL CH-47D AND MH-47E AIRCRAFT, MANDATORY TORQUE
CHECK AND REPLACEMENT OF AUXILIARY POWER UNIT BOLTS,
(CH-47-98-ASAM-03), (TB 1-2835-205-20-3).
NOTE
THIS IS AN AVIATION SAFETY ACTION
MESSAGE ISSUED IAW AR 95-1, CHAPTER 6,1
SEP 97. THIS MESSAGE HAS NOT BEEN
TRANSMITTED TO UNITS SUBORDINATE TO
ADDRESSEES. ADDRESSEES SHOULD
IMMEDIATELY RETRANSMIT THIS MESSAGE TO
ALL SUBORDINATE UNITS, ACTIVITIES OR
ELEMENTS CONCERNED. THE RETRANSMITTAL
SHALL REFERENCE THE MESSAGE. ACTION
ADDRESSES WILL IMMEDIATELY VERIFY THIS
TRANSMISSION TO CDR, AMCOM, ATTN: AMSAM-
SF-A (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 - SAME AS PARA 1A.
E. MAINTENANCE TRAINERS (CATEGORY A AND B)- SAME AS PARA 1A.
F. COMPONENT/PARTS IN STOCK AT ALL LEVELS (DEPOT AND
OTHERS) INCLUDING WAR RESERVES - INSPECT PRIOR TO ISSUE.
G. COMPONENTS/PARTS IN WORK (DEPOT LEVEL AND OTHERS) -
ITEMS LISTED IN PARAGRAPHS 6 AND 7 IN WORK WILL NOT BE ISSUED UNTIL
COMPLIANCE WITH THIS MESSAGE.
2. TASK/INSPECTION SUSPENSE DATE - WITHIN NEXT 10 FLIGHT HOURS/ 14
DAYS.
3. REPORTING COMPLIANCE SUSPENSE DATE - NO LATER THAN 27 MAY 1998
PER PARA 14A OF THIS MESSAGE.
4. SUMMARY OF PROBLEM -
A. IN TWO SEPARATE INCIDENTS SINCE OCTOBER 1997, ONE BOLT OF
SIX WHICH SECURE THE APU TURBINE ASSEMBLY TO THE REDUCTION DRIVE
ASSEMBLY HAS BACKED OUT AND BEEN INGESTED INTO THE APU COMPRESSOR
CAUSING FOD DAMAGE BUT NO UNCONTAINED FAILURES. THE ORIGINAL DEPOT
MAINTENANCE WORK REQUEST (DMWR) AND TECH MANUALS SPECIFIED A
SELF-LOCKING BOLT (P/N M4DS428-22C, NSN 5306-00-9867200). HOWEVER,
THE CURRENT DMWR AND TM SPECIFY A NEW BOLT (P/N AN101118, NSN
5306-00-638-5332) WHICH IS ALSO LISTED AS SELFLOCKING BUT, IN
REALITY, IS NOT. ANY T-62T-2B APU WHICH HAS BEEN SUBJECT TO A
SPECIAL REPAIR ACTIVITY (SRA) SINCE 1 JAN 92 IS SUSPECT
FOR HAVING THESE NON-SELF-LOCKING BOLTS. (NOTE: CHERRY POINT HAS
NEVER USED THESE BOLTS.) TO PREVENT FURTHER INCIDENTS, THE DMWR AND
TM WILL BE CORRECTED TO SPECIFY A BOLT WHICH IS TRULY SELF-LOCKING.
ALSO, BECAUSE IT IS DIFFICULT TO IDENTIFY THE SUSPECT BOLTS BASED
ONLY ON HEAD MARKINGS, ALL SIX OF THESE BOLTS IN EACH SUSPECT
T-62T-2B APU NEED TO BE REPLACED, ONE AT A TIME. THE NEW BOLT (P/N
NK4-13, NSN 5306-00-117-9897) IS CURRENTLY USED BY THE NAVY AND IS
PROVISIONED FOR ARMY USE. ALSO, A LIMITED NUMBER OF THE ORIGINAL
SELF-LOCKING BOLTS WILL BE AVAILABLE FROM DLA. UNTIL REPLACEMENT
BOLTS ARRIVE, EACH BOLT WILL BE TORQUE CHECKED, TORQUE-STRIPED, AND
REINSPECTED EVERY 50 FLIGHT HOURS TO ENSURE PROPER TORQUE (50 TO 70
POUND-INCHES TORQUE).
B. FOR MANPOWER/DOWNTIME AND FUNDING IMPACTS SEE PARA 12.
C. THE PURPOSE OF THIS MESSAGE IS TO REQUIRE TORQUE CHECKS,
TORQUE-STRIPES, AND 50-HOUR INSPECTIONS OF THE BOLTS WHICH SECURE
THE T-62T-2B APU TURBINE ASSEMBLY TO THE REDUCTION DRIVE ASSEMBLY TO
ENSURE PROPER TORQUE UNTIL REPLACEMENT OF ALL SIX BOLTS HAS BEEN
ACCOMPLISHED.
5. END ITEMS TO BE INSPECTED - ALL CH-47D AND MH-47E AIRCRAFT WITH
A T-62T-2B APUS THAT HAS BEEN SUBJECT TO AN SRA SINCE 1 JAN 92.
UNITS SHOULD EXAMINE MAINTENANCE RECORDS (DA FORM 2408-5-1
AND 2408-16) TO DETERMINE IF AN AIRCRAFT HAS BEEN SUBJECT OF AN SRA.
IF THIS CAN NOT BE DETERMINED, THE BOLTS ARE SUSPECT AND REQUIRE
REPLACEMENT.
NOTE
APU'S RECEIVED FROM DEPOT ACCOUNTS
DIRECT FROM CHERRY POINT WILL NOT
REQUIRE INSPECTION. APU'S IN ASL/PLLS
WILL REQUIRE COMPLIANCE WITH THIS ASAM.
6. ASSEMBLY COMPONENTS TO BE INSPECTED -
NOMENCLATURE PART NO. NSN
AUXILIARY POWER UNIT T-62T-2B 2835-01-092-2037
7. PARTS TO BE INSPECTED -
NOMENCLATURE PART NO. NSN
BOLT, SELF-LOCKING AN101118 5306-00-638-5332
8. INSPECTION PROCEDURES -
A. DETERMINE IF BOLTS ARE SUSPECT. SEE PARA 5. IF NOT SUSPECT,
INSPECTION IS COMPLETE.
B. IF BOLTS ARE SUSPECT:
(1) PREPARE THE AIRCRAFT FOR SAFE GROUND MAINTENANCE.
(2) GAIN ACCESS TO APU AIR SCREEN ASSEMBLY LOCATED
BETWEEN THE TURBINE ASSEMBLY AND THE REDUCTION DRIVE ASSEMBLY.
(3) CUT LOCKWIRE LACING FROM AIR SCREEN ASSEMBLY, SPREAD
SCREEN ENDS, AND SEPARATE AIR SCREEN ASSEMBLY FROM TURBINE.
(4) LOCATE SIX BOLTS PREVIOUSLY CONCEALED BY AIR SCREEN
ASSEMBLY (REFER TO FIGURE 1, ITEM 8 OF TM 55-2835-205-23P; BOLT
HEADS WILL BE TOWARD TURBINE ASSEMBLY).
(5) PERFORM TORQUE CHECK TO VERIFY 50 TO 70 POUND-INCHES
TORQUE FOR EACH BOLT. TORQUE BOLTS AS NECESSARY.
(6). APPLY TORQUE-STRIPE ACROSS EACH BOLT HEAD.
(7). REPOSITION AND SECURE AIR SCREEN ASSEMBLY.
(8). VISUALLY INSPECT TORQUE-STRIPE ON EACH BOLT EVERY 50
FLIGHT HOURS AND RETORQUE BOLTS IF NECESSARY UNTIL REPLACEMENT
SELF-LOCKING BOLTS ARE AVAILABLE.
9. CORRECTION PROCEDURES -
A. REQUISITION SIX REPLACEMENT SELF-LOCKING BOLTS (P/N
NK4-13, NSN 5306-00-117-9897) PER APU THROUGH NORMAL SUPPLY
CHANNELS.
B. REMOVE THE AIR SCREEN ASSEMBLY TO GAIN ACCESS TO THE BOLTS.
CAUTION
IN THE FOLLOWING STEP, REMOVE AND REPLACE
ONLY ONE BOLT AT A TIME. THE REPLACEMENT,
SELF-LOCKING BOLTS ARE ONE-TIME USE ONLY.
C. REPLACE THE EXISTING BOLTS ONE AT A TIME WITH THE NEW,
SELF-LOCKING NK4-13 BOLTS AND TORQUE PROPERLY (50 TO 70 POUND INCHES
TORQUE).
D. REPOSITION AND SECURE AIR SCREEN ASSEMBLY.
E. REMOVE FROM STOCK ALL BOLTS WITH P/N AN101118, NSN
530600-638-5332.
F. ADD PEN AND INK CHANGE TO TM 55-2835-205-23P, FIGURE 1,
ITEM 8, CHANGING P/N AN101118, NSN5306-00-117-9897 TO P/N NK4-13,
NSN 5306-00-117-9897.
10. SUPPLY/PARTS AND DISPOSITION -
A. PARTS REQUIRED - SIX REPLACEMENT BOLTS (P/N NK4-13, NSN
5306-00-117-9897) PER APU.
B. REQUISITIONING INSTRUCTIONS - REQUISITION REPLACEMENT PARTS
USING NORMAL SUPPLY PROCEDURES. ALL REQUISITIONS SHALL USE PROJECT
CODE (CC 57-59) "XDX"(X-RAY, DELTA,X-RAY).
NOTE
PROJECT CODE "XDX" IS REQUIRED TO TRACK AND
ESTABLISH A DATA BASE OF STOCK FUND EXPENDITURES
INCURRED BY THE FIELD AS A RESULT OF SOF ACTIONS.
C. BULK AND CONSUMABLE MATERIALS - N/A.
D. DISPOSITION - DISPOSE OF REMOVED PARTS/COMPONENTS USING
NORMAL SUPPLY PROCEDURES.
E. DISPOSITION OF HAZARDOUS MATERIAL - IAW ENVIRONMENTAL
PROTECTION AGENCY DIRECTIVES AS IMPLEMENTED BY YOUR SERVICING
ENVIRONMENTAL COORDINATOR (AR 200-1).
11. SPECIAL TOOLS AND FIXTURES REQUIRED - N/A.
12. APPLICATION -
A. CATEGORY OF MAINTENANCE - AVUM. AIRCRAFT DOWNTIME WILL BE
CHARGED TO AVUM.
B. ESTIMATED TIME REQUIRED -
(1) TOTAL OF 1 MAN-HOURS USING 1 PERSONS.
(2) TOTAL OF 1 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 NK4-13 5306-00-117-9897 6 $0.85 $5.10
TOTAL COST PER AIRCRAFT = $5.10
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 - TM 55-2835-205-23P AND DMWR 55-2835-205 SHALL BE
CHANGED TO REFLECT THIS MESSAGE. A COPY OF THIS MESSAGE SHALL BE
INSERTED IN THE APPROPRIATE TM AND DMWR AS AUTHORITY TO IMPLEMENT
THE CHANGE UNTIL THE PRINTED CHANGE IS RECEIVED.
13. REFERENCES -
A. TM 55-2835-205-23P.
B. DMWR 55-2835-205.
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 EMAIL
TO CDR, AMCOM, ATTN: AMSAM-SF-A (SOF COMPLIANCE OFFICER), R
EDSTONE ARSENAL, AL 35898-5222 IAW AR 95-1. DATAFAX NUMBER IS DSN
897-2111 OR (256)313-2111. E-MAIL ADDRESS IS "SAFEADM@
REDSTONE.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. TASK/INSPECTION REPORTING SUSPENSE DATE (AIRCRAFT) - NO
SPECIAL REPORT OF THE RESULTS OF THIS INSPECTION IS REQUIRED.
C. REPORTING MESSAGE RECEIPT (SPARES) - N/A
D. TASK/INSPECTION REPORTING SUSPENSE DATE (SPARES). N/A
E. THE FOLLOWING FORMS ARE APPLICABLE AND ARE TO BE
COMPLETED IN ACCORDANCE WITH DA PAM 738-751, 15 JUN 92 -
NOTE
FOR ULLS-A UNITS, USE APPLICABLE "E" FORMS.
(1) DA FORM 2408-5-1, EQUIPMENT MODIFICATION RECORD (APU).
(2) DA FORM 2408-13, AIRCRAFT STATUS INFORMATION RECORD DA
FORM 2408-18, EQUIPMENT INSPECTION LIST.
(3) DA FORM 2408-13-1, AIRCRAFT INSPECTION AND
MAINTENANCE RECORD.
(4) DA FORM 2408-15, HISTORICAL RECORD FOR AIRCRAFT.
(5) DA FORM 2408-18, EQUIPMENT INSPECTION LIST.
NOTE
ULLS-A USERS USE INSPECTION NUMBER 135 FOR THE 50 HOUR
TORQUE CHECK.
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. JOSEPH
INGRAM, AMSAM-AR-EP, DSN 897-4994 OR COMMERCIAL (256)3134994,
DATAFAX IS DSN 897-4961. E-MAIL IS "INGRAMJ@AVRDECR.
REDSTONE.ARMY.MIL".
B. LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS NORM
HUSTON, SFAE-AV-CH-L, DSN 897-4289 OR COMMERCIAL (256)313-4289,
DATAFAX IS DSN 897-4348. E-MAIL IS "HUSTONN@PEOAVN.REDSTONE.
ARMY.MIL".
C. FORMS AND RECORDS POINT OF CONTACT FOR THIS MESSAGE IS MS.
ANN WALDECK, AMSAM-MMC-RE-FD, DSN 746-5564 OR (256)876-5564, DATAFAX
IS DSN 746-4904.E-MAIL IS "WALDECK-AB@REDSTONE. ARMY.MIL".
D. SAFETY POINT OF CONTACT FOR THIS MESSAGE IS MR. HOWARD
CHILTON, AMSAM-SF-A, DSN 897-2068 OR COMMERCIAL (256)313-2068,
DATAFAX IS DSN 897-2111. E-MAIL IS "CHILTON-HL@REDSTONE. ARMY.MIL".
ALTERNATE POINT OF CONTACT IS TENG OOI, AMSAM-SF-A, DSN 897-2094 OR
COMMERCIAL (256)313-2094, DATAFAX IS DSN 897-2111. E-MAIL
IS "OOI-TK@REDSTONE.ARMY.MIL".
E. FOREIGN MILITARY SALES RECIPIENTS REQUIRING CLARIFICATION
OF ACTION ADVISED BY THIS MESSAGE SHOULD CONTACT CW5 JOSEPH L.
WITTSTROM, SECURITY ASSISTANCE MANAGEMENT, AMSAMSA, DSN 897-0681 OR
(256) 313-0681. EMAIL IS "WITTSTROMJL@REDSTONE. ARMY.MIL". MR.
RONNIE W. SAMMONS, AMSAM-SA-CS-NF, DSN 897-0869 OR (256)313-0869.
DATAFAX IS DSN 897-0411 OR (256) 313-0411. EMAIL IS "SAMMONS-RW@
REDSTONE.ARMY.MIL". (HUNTSVILLE, AL IS GMT MINUS 6 HRS).
F. AFTER HOURS CONTACT THE AMCOM COMMAND OPERATIONS CENTER
(COC) DSN 897-2066/7 OR (256)313-2066/7.