SYNOPSIS
CH-47-94-ASAM-02 AVIATION SAFETY ACTION MESSAGE, CH-47D, MH-47D, MH-47E
AMENDMENT TO ONE-TIME AND RECURING INSPECTIONS (ATCOM
MSG DTG 171815Z OCT 93) OF ROTARY WING HEAD BUSHINGS,
(TB 1-1520-240-20-67).
291756Z OCT 93, LYELL MYERS, AMSAT-C-XS, X2258.
NOTE: Enter a "Q" + <CR> to exit or <SPACEBAR> to view
the entire message. (NON-REPORTING)
.
01 06 291756Z OCT 93 PP PP UUUU
FROM
:CDRATCOM ST LOUIS MO//AMSAT-C-XS//
TO
:AIG 6713
:AIG 9004
:AIG 8708
:AIG 9042
:DEFARM CAMPBELL AS//DAVN-A//
: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
:
TEXT
:UNCLAS
SUBJECT - AVIATION SAFETY ACTION MESSAGE, RCS CSGLD-1860(R1),
CH-47D, MH-47D, MH-47E AMENDMENT TO ONE-TIME AND RECURRING
INSPECTIONS (ATCOM MSG DTG 171815Z OCT 93) OF ROTARY WING HEAD
BUSHINGS (CH-47-94-ASAM-02) (TB 1-1520-240-20-67).
NOTE - THIS IS AN AVIATION SAFETY ACTION MESSAGE ISSUED PER AR 95-3,
CHAPTER 5 REVISION VIA MESSAGE HQ AVSCOM, AMSAV-XSOF, 181900Z SEP
90, SUBJECT: CHANGE TO AR 95-3, CHAPTER 5, SAFETY OF FLIGHT
MESSAGES. THIS MESSAGE 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-XS (SOF
COMPLIANCE OFFICER).
1. PRIORITY CLASSIFICATION - N/C.
2. TASK/INSPECTION SUSPENSE DATE - N/C.
3. REPORTING COMPLIANCE SUSPENSE DATE - REPORT COMPLIANCE IAW WITH
REQUIREMENTS OF CH-47-94-ASAM-01.
4. SUMMARY OF PROBLEM - THIS AMENDMENT TO THE BASIC ASAM IS
OFFERED TO AVOID UNNECESSARY DOWNTIME. THE COMPLIANCE TIME IN THE
BASIC ASAM HAS BEEN EXTENDED UP TO 50 ADDITIONAL FLIGHT HOURS AFTER
FINDING A BUSHING WHICH HAS SLIPPED FROM ITS PROPER POSITION IAW
CH-47-94-ASAM-01.
5. END ITEMS TO BE INSPECTED - N/C.
6. ASSEMBLY COMPONENTS TO BE INSPECTED -N/C.
7. PARTS TO BE INSPECTED - N/C.
8. INSPECTION PROCEDURES - PARA 8B AND PRECEDING NOTE IS AMENDED AS
FOLLOWS -
NOTE
IF THE BUSHINGS HAVE SLIPPED, YOU HAVE 50 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. AFTER COMPLETION OF
THE 100TH FLIGHT HOUR AND NO BUSHINGS HAVE SLIPPED THE INSPECTION IS
COMPLETE. IF YOU HAVE ACCUMULATED 100 HRS SINCE ROTOR HEAD WAS
MODIFIED/PRODUCED OR OVERHAULED AND BUSHINGS HAVE NOT SLIPPED THE
INSPECTION IS COMPLETE.
(1) CH-47 UNITS SHOULD ENSURE THAT ALL ROTOR HEADS P/N
145R2003-9, AND 145R2004-18 HAVE BOLT BUSHING P/N 145R3650-4
INSTALLED IN THE INBOARD LAG DAMPER/ROTOR HEAD PITCH HOUSING BORE.
(2) SPARE ROTOR HEADS P/N 145R2003-9 AND 145R2004-18
RECEIVED FROM STOCK REQUIRE THE 25, 50 AND 100 HOUR REINSPECTION
AFTER INSTALLATION ON AIRCRAFT.
9. CORRECTION PROCEDURES - CORRECTION PROCEDURES ARE AMENDED TO
INCLUDE -
B. IS AMENDED AT (2) AS FOLLOWS -
(2) FOR SCORING ON THE BOLTS SHANK -
(A) POLISH OUT MARKS ON THE BUSHING PART.
(B) SCORING MARKS ON THE SHANK ARE CAUSE FOR
REJECTION.
C. IS AMENDED AT (6) AND (14) TO INCLUDE PRECEEDING CAUTION AS
FOLLOWS -
(6) SCORING IN THE LUG BORE SHOULD NOT BE REMOVED BY
REAMING. USING SCOTCH-BRITE WET WITH ACETONE, LIGHTLY POLISH THE
UPPER LUG BUSHING BORE OF THE PITCH HOUSING ASSEMBLY TO REMOVE
BURRS, SHARP EDGES AND ANY DEBRIS OR FRETTING.
M TEMPERATURE WHEN THE LOC-TITE
#635 OR LOCTITE #680 IS APPLIED.
(14) COAT THE UPPER LUG BORE OF THE PITCH HOUSING ASSEMBLY
P/N 145R2075 WITH LOC-TITE #635 (MIL-R-46082) OR LOCTITE #680
RETAINING COMPOUND.
10. SUPPLY/PARTS AND DISPOSITION - PARA C IS AMMENDED TO INCLUDE -
C. BULK AND CONSUMABLE MATERIALS -
NOMENCLATURE PART NO./NSN QUANTITY
LOC-TITE NUMBER 680 NNSN(LOCAL PURCHASE)
11. SPECIAL TOOLS, JIGS AND FIXTURES REQUIRED - N/C.
12. APPLICATION - N/C.
13. REFERENCES - N/C.
14. RECORDING AND REPORTING REQUIREMENTS - COMPLY WITH
CH-47-94-ASAM-01.
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT - SAFETY POINT OF CONTACT FOR THIS MESSAGE IS
MR. LYELL MYERS, AMSAT-C-XS, DSN 693-2258/2085 OR COMMERCIAL
314/263-2258/2085.