SYNOPSIS
CH-47-93-ASAM-03 AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY, ALL
CH-47D, MH-47D AND MH-47E HELICOPTERS, ONE TIME INSPECTION
OF PUMPING UNIT, HYDRAULIC, NSN 1650-01-240-4341.
121900Z MAR 93, TERESE MCGREW, AMSAT-C-XS, X2085.
NOTE: Enter a "Q" + <CR> to exit or <SPACEBAR> to view
the entire message. (REPORTING)
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01 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
CDRATCOM ST LOUIS MO //AMSAT-C-XS//
AIG 6713
AIG 9004
AIG 8708
AIG 9042
DEFARM CANBERRA AS //DOHS-A//
DEFNAV CANBERRA AS
CDRUSARDSG CANBERRA AS
HQLCENG MELBOURNE AS //DAIRENG//
LOG CON OTTAWA ONT CAN //DTHEM 6-3//
AUSTNAV WASHINGTON DC //DEFNAV//
AUSTAIR WASHINGTON DC //SENGSO//
USOMC CAIRO EG //AV//
ODC ATHENS GR //ODCSA-A//
CDR4THBN228THAVN SOTO CANO HO //AVN-AMO//
CDR160TH SOAR FT CAMPBELL KY //AOAV-SI//
CDRBGAD RICHMOND KY //SDSBG-GC//
CHMUSLO RABAT MO //AF//
CHUSAS RIYADH SA //ASAV//
CF: SFAE-AV-CH, AMSAT-R-ECC, AMSAT-I-ILNO(RAAF), AMSAT-I-MEA,
AMSAT-I-LOS(AOC)
TERESE MCGREW
AMSAT-C-XS, X2085 MINIMIZE CONSIDERED
EDWARD J. HOLLMAN
CHIEF, SAFETY OFFICE
.
UNCLAS
02 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
ODC MADRID SP //ARMY AND NAVY SEC//
CJUSMAG BANGKOK TH
CDRUSARDSG LONDON UK //AMXSN-UK-SE//
INFO CDRAMCCOM ROCK ISLAND IL //AMSAR-QAS-P//
CDRAMC ALEXANDRIA VA //AMCMR/AMCCS/AMCSM-WAA//
XMT USDAO DHAKA BG
USDAO RANGOON BM
USDAO COLUMBO CE
USDAO SUVA FJ
OMADP JAKARTA ID
DSA NEW DELHI IN
USDAO ANTANANARIVO MA
SAO KUALA LUMPUR MY
USDAO KATMANDU NP //SAO//
USDAO SINGAPORE SN //SAO//
UNCLAS RELEASABLE TO NATO ADDRESSEES
AIG 9004 TAKE FOR INFO ONLY
AIG 8708 TAKE FOR INFO ONLY
AIG 9042 TAKE FOR INFO ONLY
.
UNCLAS
03 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY, RCS
CSGLD-1860(R1), ALL CH47D, MH47D AND MH47E HELICOPTERS, ONE TIME
INSPECTION OF PUMPING UNIT, HYDRAULIC, NSN 1650-01-240-4341.
(CH-47-93-ASAM-03)
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 -
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
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UNCLAS
04 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
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 - AIRCRAFT WILL NOT BE
RELEASED UNTIL COMPLIANCE WITH THIS ASAM HAS BEEN COMPLETED.
D. AIRCRAFT IN TRANSIT -
(1) SURFACE/AIR SHIPMENT - PRIOR TO FIRST FLIGHT.
(2) FERRY STATUS - SAME AS PARA 1A.
E. MAINTENANCE TRAINERS (CATEGORY A, B AND OTHERS) - SAME AS
PARA 1A.
F. COMPONENT/PARTS IN STOCK INCLUDING WAR RESERVES AT AVUM/AVIM
LEVELS - REPORT IN ACCORDANCE WITH PARA 8B.
2. TASK/INSPECTION SUSPENSE DATE - WITHIN 10 FLIGHT HOURS OR 5 DAYS
FROM THE DATE OF THIS MESSAGE, WHICHEVER OCCURS FIRST.
3. REPORTING COMPLIANCE SUSPENSE DATE - REPORT COMPLIANCE TO
COMMANDER, ATCOM, ATTN: AMSAT-C-XS NO LATER THAN 5 APRIL 93 PER PARA
14A OF THIS MESSAGE.
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UNCLAS
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YES
4. SUMMARY OF PROBLEM -
A. THE CH-47D FLEET IS CURRENTLY EXPERIENCING HYDRAULIC SYSTEM
FAILURES. A TYPICAL SCENARIO IS AS FOLLOWS: DURING NORMAL FLIGHT,
THE HYDRAULIC SYSTEM PRESSURE INDICATES PRESSURE FLUCUATIONS FROM A
MAXIMUM OF 4000 PSI TO A MINIMUM OF 2000 PSI, FOLLOWED BY
ILLUMINATION OF THE HYDRAULIC FLIGHT CONTROL SEGMENT LIGHT. ALSO,
HIGH TEMPERATURES IN THE HYDRAULIC SYSTEM HAVE BEEN NOTED WHEN
AIRCRAFT IS SHUT DOWN. AN INTENSIVE INVESTIGATION IS BEING
CONDUCTED. THE INVESTIGATION IS CENTERED ON THE FLIGHT
CONTROL/UTILITY HYDRAULIC PUMP AT THIS TIME, ALTHOUGH IT IS NOT
CERTAIN THAT THE PUMP IS THE ROOT CAUSE.
B. THE SUSPECT PUMPS ARE MANUFACTURED BY STRATO-POWER AND THE
SERIAL NUMBERS HAVE A SUFFIX "BO", NSN 1650-01-240-4341, P/N
64WE075102 AND OR 938555. IT SHOULD BE NOTED THAT NO ABNORMAL
PROBLEMS HAVE BEEN REPORTED WITH THE VICKERS PUMP, NSN
1650-01-115-3948, P/N PV3-075-20. FURTHER INFORMATION AND
INSTRUCTIONS WILL BE DISSEMINATED AS SOON AS IT IS AVAILABLE. REPORT
ALL FAILURES THRU QDR SYSTEM TO SUPPORT INVESTIGATIONS.
C. THE CH-47 HAS 3 HYDRAULIC PUMPS ON BOARD AND ANY ONE IS
CAPABLE OF POWERING THE FLIGHT CONTROLS. POWER TRANSFER UNIT (PTU)
.
UNCLAS
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YES
CAN BE UTILIZED IN EMERGENCY CONDITIONS WHEN POWERED BY UTILITY
HYDRAULIC PUMP OR APU MOTOR PUMP. IN THE EVENT SUCH A FAILURE
OCCURS, UTILIZE CURRENT PROCEDURES OF TM 55-1520-240-10 PARA 9-49.
D. THE PURPOSE OF THIS MESSAGE IS TO ALERT USERS OF THE
POTENTIAL PROBLEM, TO INSPECT FOR AND REPORT SUSPECT PUMPS TO
FACILITATE EVENTUAL CORRECTIVE ACTION. THE CH-47D HAS A TRIPLE
REDUNDANT SYSTEM AND THIS IS A LOW RISK SAFETY ISSUE.
5. END ITEMS TO BE INSPECTED - ALL CH-47D/MH-47D/MH-47E AIRCRAFT.
6. ASSEMBLY COMPONENTS TO BE INSPECTED -
NOMENCLATURE PART NO. NSN
PUMPING UNIT, HYDRAULIC 938555 1650-01-240-4341
PUMPING UNIT, HYDRAULIC 64WE075102 1650-01-240-4341
7. PARTS TO BE INSPECTED - N/A.
8. INSPECTION PROCEDURES -
A. PERFORM A VISUAL INSPECTION OF ALL THREE HYDRAULIC PUMPS.
REFERENCE TM 55-1520-240-23P, FIG 178, ITEM 12 (1 PUMP) AND FIG 183
ITEM 26 (2 PUMPS).
B. RECORD THE FOLLOWING DATA FROM EACH STRATO-POWER PUMP AND
REPORT IN ACCORDANCE WITH PARA 14B BELOW.
(1) LOCATION (NO. 1 FLIGHT CONTROL(FORWARD TRANSMISSION),
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UNCLAS
07 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
NO. 2 FLIGHT CONTROL OR UTILITY SYSTEM (AFT TRANSMISSION) AND
SPARES.
(2) AIRCRAFT SERIAL NUMBER, AIRCRAFT HOURS.
(3) PUMP SERIAL NUMBER.
C. INSPECT PUMP FOR BROKEN SCREWS,(ITEM 14, FIGURE 183A, REF.
13A) ON THE PUMP BODY (NOT THE MOUNTING BOLTS), AND FOR EVIDENCE OF
LEAKS. REPLACE ANY PUMP WHICH HAS BROKEN SCREWS OR EXCESSIVE
LEAKAGE. REPORT ANY PUMPS FOUND UNSERVICEABLE TO LOG POC PARA 16B
BELOW.
9. CORRECTION PROCEDURES - TO BE DETERMINED.
NOTE
A COPY OF THIS MESSAGE WILL BE PLACED IN THE AIRCREW INFORMATION
READING FILE.
10. SUPPLY/PARTS AND DISPOSITION - CONTACT LOGISTICAL POC PER PARA
16B BELOW.
11. SPECIAL TOOLS, JIGS AND FIXTURES REQUIRED - N/A.
12. APPLICATION -
A. CATEGORY OF MAINTENANCE - AVUM. AIRCRAFT DOWNTIME WILL BE
CHARGED TO AVUM.
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UNCLAS
08 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
B. TIME REQUIRED -
(1) TOTAL OF .5 MANHOUR USING 1 PERSON.
(2) TOTAL OF .5 HOUR DOWNTIME FOR ONE END ITEM.
C. ESTIMATED COST IMPACT OF STOCK FUND ITEMS 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 - A COPY OF THIS MESSAGE WILL BE PLACED IN THE AIRCREW
INFORMATION READING FILE.
13. REFERENCES -
A. TM 55-1520-240-23P, DATED 1 NOV 89, WITH CHANGES.
B. TM 55-1520-240-10, DATED 30 APR 92, WITH CHANGES.
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
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UNCLAS
09 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
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.
UPON ENTERING REQUIREMENTS OF THIS MESSAGE ON DA FORM 2408-13,
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.
B. TASK/INSPECTION REPORTING SUSPENSE DATE (AIRCRAFT) - UPON
COMPLETION OF INSPECTION, UNITS WILL FORWARD A PRIORITY MESSAGE OR
DATAFAX, DSN 693-1485 OR COMMERCIAL 314/263-1485 TO: COMMANDER,
ATCOM, ATTN: SFAE-AV-CH-L. THE REPORT WILL CITE THIS MESSAGE
NUMBER, DATE OF INSPECTION, AIRCRAFT SERIAL NUMBER, AIRCRAFT HOURS
AND SERIAL NUMBERS OF STRATO POWER PUMP NUMBERS. INSPECTION AND
REPORTS WILL BE COMPLETED NO LATER THAN TASK/INSPECTION SUSPENSE
DATE.
C. REPORTING COMPLIANCE SUSPENSE DATE (SPARES) - N/A.
D. TASK/INSPECTION REPORTING SUSPENSE DATE (SPARES) - SEE PARA
8B ABOVE.
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UNCLAS
10 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
E. THE FOLLOWING FORMS ARE APPLICABLE AND ARE TO BE COMPLETED
IN ACCORDANCE WITH DA PAM 738-751, 15 JUN 92 -
(3) DA FORM 2408-13, AIRCRAFT STATUS INFORMATION RECORD.
(4) DA FORM 2408-13-1, AIRCRAFT INSPECTION AND MAINTENANCE
RECORD.
(5) DA FORM 2408-15, HISTORICAL RECORD FOR AIRCRAFT.
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. ROBERT
LAWYER, SFAE-AV-CH-T, DSN 693-3550 OR COMMERCIAL 314/263-3550.
B. LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. STEVE
KOUCHNERKAVICH, SFAE-AV-CH-L, DSN 693-2063/1415 OR COMMERCIAL
314/263-2063/1415, DATAFAX DSN 693-1485 OR COMMERCIAL 314/263-1485.
C. FORMS AND RECORDS POINT OF CONTACT FOR THIS MESSAGE IS MS.
ANN WALDECK, AMSAT-I-MDM, DSN 693-1758 OR COMMERCIAL 314/263-1758.
D. SAFETY POINT OF CONTACT FOR THIS MESSAGE IS MS. TERESE
MCGREW, AMSAT-C-XS, DSN 693-2085/2258 OR COMMERCIAL
314/263-2085/2258.
E. FOREIGN MILITARY SALES (FMS) RECIPIENTS REQUIRING
.
UNCLAS
11 11 121900Z MAR 93 PP PP UUUU ZEXW 0711300Z
YES
CLARIFICATION OF ACTION ADVISED BY THIS MESSAGE SHOULD CONTACT MW4
JAY NANCE/MR. RON VAN REES, AMSAT-I-IA, DSN 693-3826/3659 OR
COMMERCIAL 314/263-3826/3659.
F. AFTER HOURS CONTACT AVSCOM COMMAND OPERATIONS CENTER (COC)
DSN 693-2066/7 OR COMMERCIAL 314/263-2066/7.