01 12 221518Z APR 99 PP PP UUUU AA ZYUW
FROM
:CDRAMCOM REDSTONE ARSENAL AL//AMSAM-SF-A//
TO
:AIG 8881
:AIG 9004
:AIG 7471
:AIG 12124
:USMILGP BUENOS AIRES AR//ARMY AND AF SEC//
:DEFAIR MATERIAL CANBERRA ACT AS//DAAP-AF//
:CDRUSARDSG CANBERRA ACT AS//AMXIP-AS//
:ARGENTINE AIR ATTACHE FMS WASHINGTON DC
:EGYPT AF FMS CAIRO EG//ED/MA//
:USOMC CAIRO EG//AV//
:ODC ATHENS GR//ODCSA//
:CHJUSMAG SEOUL KOR//MKAR-AV//
:ROK ARMY FMS PUSAN KOR//ALC-LSD-L//
:CDR160THSOAR FT CAMPBELL KY//AOAV-SI//
:CDRBGAD RICHMOND KY//SIOBG-GC//
:USDAO RABAT MO//AF//
:ODC THE HAGUE NL//AVIATION SAFETY//
:RNLAF MATERIAL THE HAGUE NL
:RNLAF OPERATIONS THE HAGUE NL
:CDRUSASAC NEW CUMBERLAND PA//AMSAC-SALO-UK//
:CHUSAS RIYADH SA//ASAV//
:SAO SINGAPORE SN//AVIATION SAFETY//
:ODC MADRID SP//ASM//
:SPAIN ARMY FMS MADRID SP
:AIT TAIPEI TW
:TAIWAN ARMY FMS TAIPEI TW
:CJUSMAG THAI BANGKOK TH//MAGTAR-FS//
:ROYAL THAI AF FMS BANGKOK TH//BANGSUE DEPOT//
:ROYAL THAI ARMY FMS BANGKOK TH//DUSIT ORDANCE DEPOT//
:CDRUSARDSG LONDON UK//AMXSN-UK-SE//
:ODC LONDON UK
INFO
:FAA SOUTHWEST RGN HQ FORT WORTH TX//ASW-100//
:CDRAMC ALEXANDRIA VA//AMCMR/AMCCS/AMCSM-WAA//
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ACCT
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TEXT
:UNCLAS
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY, RCS
CSGLD-1860(R1), ALL H-47 SERIES AIRCRAFT, SUBJECT: EXTENSION FOR
REPLACEMENT OF THE AFT LANDING GEAR DRAG LINK ASSEMBLIES THAT ARE
SUSCEPTIBLE TO STRESS CORROSION CRACKING,(CH-47-99-ASAM-05) (TB
1-1520-240-20-110).
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
AFFECTED OR 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 - SAME AS PARA 1A.
C. AIRCRAFT UNDERGOING MAINTENANCE - SAME AS PARA 1A.
D. AIRCRAFT IN TRANSIT - SAME AS PARA 1A.
E. MAINTENANCE TRAINERS (CATEGORY A AND B) - N/A.
F. COMPONENT/PARTS IN STOCK AT ALL LEVELS (DEPOT AND OTHERS)
INCLUDING WAR RESERVES - N/A.
G. COMPONENTS/PARTS IN WORK (DEPOT LEVEL AND OTHERS) - N/A
2. TASK/INSPECTION SUSPENSE DATE - WITHIN NEXT 10 FLIGHT HOURS/14
DAYS.
3. REPORTING COMPLIANCE SUSPENSE DATE - NO LATER THAN 14 MAY 99
IAW PARA 14A OF THIS MESSAGE.
4. SUMMARY OF PROBLEM -
A. SEVERAL INSTANCES HAVE BEEN REPORTED OF FAILED AFT LANDING
GEAR DRAG LINKS. THE INVESTIGATION REVEALED THE CAUSE TO BE STRESS
CORROSION CRACKING. NEW DRAG LINKS ARE NOW MADE FROM A MATERIAL
WHICH IS NOT SUSCEPTIBLE TO STRESS CORROSION CRACKING.
(1) AMCOM ISSUED TB 1-1520-240-20-80 (CH-47-96-ASAM-01) TO
INSPECT AND IDENTIFY AFT DRAG LINKS WHICH HAD EITHER A "3" OR "5"
STAMPED OR PAINTED ON THEM. THE DRAG LINKS IDENTIFIED WITH A "3"
WERE MADE OF A MATERIAL WHICH IS SUSCEPTIBLE TO STRESS CORROSION
CRACKING AND WERE REQUIRED TO BE REPLACED BY 6 NOV 97. THE DRAG
LINKS IDENTIFIED WITH A "5" WERE MADE OF A MATERIAL WHICH IS NOT
SUSCEPTIBLE TO THE SAME STRESS CORROSION CRACKING FAILURE MODE AND
WERE NOT REQUIRED TO BE REPLACED.
(2) AMCOM ISSUED TB 1-1520-240-20-100 (CH-47-98-ASAM-02) TO
EXTEND THE OPERATIONAL LIFE AND ALLOW CONTINUED USE OF THE AFT
LANDING GEAR DRAG LINKS IDENTIFIED WITH A "3" UNTIL 30 APRIL 99. THE
RISK FOR THIS EXTENSION WAS DETERMINED TO BE MEDIUM. ROLL-ON
LANDINGS OF AIRCRAFT WITH LINKS IDENTIFIED WITH A "3" WERE
RESTRICTED IAW TB 1-1520-240-20-100 (CH-47-98-ASAM-02).
(3) AFTER CONDUCTING A THOROUGH REVIEW OF PAST
ACCIDENTS, IT HAD BEEN DETERMIONED THE LIKELIHOOD OF A ROTOR
BLADE/FUSELAGE STRIKE WAS IMPROPBABLE IF A LANDING GEAR DRAG LINK
FAILURE OCCURED DURING A ROLL ON LANDING. AS A RESULT, AMCOM
ISSUED TB 1-1520-240-20-101 (CH-47-98-ASAM-05) TO RESCIND THE ROLL-ON
LANDING RESTRICTION IMPOSED BY TB 1-1520-240-20-100
(CH-47-98-ASAM-02).
B. FOR MANPOWER/DOWNTIME AND FUNDING IMPACTS SEE PARA 12.
C. THE PURPOSE OF THIS MESSAGE IS TO EXTEND THE FINAL
REPLACEMENT DATE OF THE AFT LANDING GEAR DRAG LINKS IDENTIFIED WITH
A "3" FROM 30 APRIL 1999 TO 31 OCTOBER 2000. A SYSTEM SAFETY RISK
ASSESSMENT HAS BEEN WRITTEN TO IDENTIFY THE ADDITIONAL RISK
ASSOCIATED WITH THIS EXTENSION.
5. END ITEMS TO BE INSPECTED - ALL H-47 SERIES HELICOPTERS.
6. ASSEMBLY COMPONENTS TO BE INSPECTED -
NOMENCLATURE PART NO. NSN
AFT LANDING GEAR ASSEMBLY 114L2329-2 1620-00-107-4529
AFT LANDING GEAR ASSEMBLY 114L2329-3 1620-00-107-4529
7. PARTS TO BE INSPECTED - N/A
8. INSPECTION PROCEDURES -
A. CHECK THE AIRCRAFT RECORDS (DA FORMS 2408-13-1, 2408-14,
2408-15) TO DETERMINE IF REPLACEMENT OF THE AFT LANDING GEAR DRAG
LINK ASSEMBLY, P/N 114L2329 IS REQUIRED IAW TB 1-1520-240-20-80
(CH-47-96-ASAM-01).
B. IF REPLACEMENT IS REQUIRED, SEE PARAGRAPH 9 FOR FURTHER
INSTRUCTION.
C. IF REPLACEMENT OF THE AFT LANDING GEAR DRAG LINK ASSEMBLY IS
NOT REQUIRED, NO FURTHER ACTION IS REQUIRED.
9. CORRECTION PROCEDURES - IF REPLACEMENT OF THE AFT LANDING GEAR
DRAG LINK ASSEMBLY IS REQUIRED IAW TB 1-1520-240-20-80
(CH-47-96-ASAM-01), PERFORM THE FOLLOWING.
A. ANNOTATE IN THE APPROPRIATE RECORDS THAT REPLACEMENT OF THE
AFT LANDING GEAR DRAG LINK ASSEMBLY IS REQUIRED BY 30 OCTOBER 2000
IAW THIS ASAM.
B. ALL REPLACEMENT DRAG LINKS RECEIVED FROM THE DLA SUPPLY
SYSTEM ARE MADE OF THE STRESS CORROSION CRACKING RESISTANT MATERIAL
AND ARE TO BE MARKED WITH PAINT OR PERMANENT MARKER IDENTIFYING THEM
WITH A "5" WHEN INSTALLED ON THE AIRCRAFT.
10. SUPPLY/PARTS AND DISPOSITION -
A. PARTS REQUIRED - ITEMS CITED IN PARAGRAPHS 6 MAY BE
REQUIRED TO REPLACE DEFECTIVE ITEMS. THE FOLLOWING HARDWARE MAY ALSO
BE REQUIRED TO REPLACE THE DRAG LINK ASSEMBLY:
NOMENCLATURE PART NO. NSN
PIN, COTTER MS24665-378 5315-00-899-4118
WASHER, FLAT AN960-616L 5310-00-167-0837
PIN, COTTER MS24665-447 5315-00-239-8030
NUT, CASTELLATED MS21025-28 5310-00-838-0264
WASHER, FLAT 114L2378-1 5310-00-880-4518
PIN, FULCRUM 114L2356-1 5315-00-868-9794
NUT, SELF-LOCKING MS21083N6 5310-00-926-1852
BOLT, MACHINE AN6-37A 5306-00-275-9560
NUT, PLAN CASTELLATED AN310-16 5310-00-167-1294
WASHER, FLAT 114L2054-1 5310-00-865-9359
PIN, TRUNNION 114L2353-1 5315-00-869-0719
B. REQUISITIONING INSTRUCTIONS - REQUISITION REPLACEMENT PARTS
THROUGH NORMAL SUPPLY CHANNELS USING NORMAL SUPPLY PROCEDURES. ALL
REQUISITIONS SHALL USE PROJECT CODE "XBN", "X-RAY-BRAVO-NOVEMBER" PER
THIS MESSAGE.
NOTE
PROJECT CODE "XBN", "X-RAY-BRAVO-NOVEMBER",
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 IAW
NORMAL SUPPLY PROCEDURES. A QDR IS NOT REQUIRED.
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 - TOTAL OF 0.25 MAN-HOURS USING 1
PERSON FOR RECORDS INSPECTION.
C. ESTIMATED COST IMPACT TO THE FIELD - N/A.
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 - N/A.
13. REFERENCES -
A. TB 1-1520-240-20-80 (CH-47-96-ASAM-01).
B. TB 1-1520-240-20-100 (CH-47-98-ASAM-02).
C. TB 1-1520-240-20-101 (CH-47-98-ASAM-05).
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 CDR, AMCOM, ATTN: AMSAM-SF-A (SOF COMPLIANCE OFFICER), REDSTONE
ARSENAL, AL 35898-5000, 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) - N/A.
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
IAW DA PAM 738-751, 15 JUN 92 -
NOTE
ULLS-A USERS WILL USE APPLICABLE "E" FORMS.
(1) DA FORM 2408-13, AIRCRAFT STATUS INFORMATION RECORD.
(2) DA FORM 2408-13-1, AIRCRAFT INSPECTION AND MAINTENANCE
RECORD.
(3) DA FORM 2408-14, UNCORRECTED FAULT RECORD.
(4) DA FORM 2408-15, HISTORICAL RECORD FOR AIRCRAFT.
(5) DD FORM 1577/DD FORM 1577-1, UNSERVICEABLE (CONDEMNED)
TAG/LABEL - MATERIEL (COLOR RED). ANNOTATE REMARKS BLOCK WITH
"CONDEMNED IAW CH-47-99-ASAM-05 AND MUTILATED IAW TM 1-1500-328-23."
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. MATT
WESSELSCHMIDT, AMSAM-AR-E-I-C-H, DSN 897-4286 OR (256) 313-4286,
DATAFAX IS DSN 897-4348 OR (256) 313-4348.
E-MAIL IS "WESSELSCHMIDT-ML@AVRDECR.REDSTONE.ARMY.MIL".
B. LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. BILL
OLSON, SFAE-AV-CH-L, DSN 897-4304 OR (256) 313-4304, DATAFAX IS DSN
897-4348 OR (256) 313-4348. E-MAIL IS
"OLSONW@PEOAVN.REDSTONE.ARMY.MIL".
C. WHOLESALE MATERIEL POINT OF CONTACT (SPARES) IS MR. JEFFERY
MOORE, AMSAM-MMC-DLA, DSN 788-6403 OR (256) 842-6403, DATAFAX IS DSN
645-0192. E-MAIL IS "MOORE-JL@EXCHANGE1.REDSTONE.ARMY.MIL."
D. FORMS AND RECORDS POINT OF CONTACT FOR THIS MESSAGE IS MS.
ANN WALDECK, AMSAM-MMC-RE-FF DSN 746-5564 OR (256) 876-5564, DATAFAX
IS DSN 746-4904 OR (256) 876-4904. E-MAIL IS
"WALDECK-AB@REDSTONE.ARMY.MIL.
E. SAFETY POINT OF CONTACT FOR THIS MESSAGE IS MR. BOB BROCK,
AMSAM-SF-A, DSN 788-8632 OR (256) 842-8632, DATAFAX IS DSN 897-2111
OR (256) 313-2111. E-MAIL IS "BOB.BROCK@REDSTONE.ARMY.MIL".
F. FOREIGN MILITARY SALES RECIPIENTS REQUIRING CLARIFICATION
OF ACTION ADVISED BY THIS MESSAGE SHOULD CONTACT: CW5 JOSEPH L.
WITTSTROM, SECURITY ASSISTANCE MANAGEMENT, AMSAM-SA, DSN 897-0681 OR
(256) 313-0681. EMAIL IS "WITTSTROMJL@REDSTONE.ARMY.MIL" OR 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
"SAMMONSRW@REDSTONE.ARMY.MIL". HUNTSVILLE, AL IS GMT MINUS 6 HRS.
G. AFTER HOURS CONTACT THE AMCOM COMMAND OPERATIONS CENTER
(COC) DSN 897-2066/7 OR (256) 313-2066/7.