SYNOPSIS
CH-47-94-ASAM-06 AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY,
ALL CH47D, MH47D AND MH47E HELICOPTERS, ONE TIME AND
RECURRING INSPECTION OF PUMPING UNIT, HYDRAULIC,
(TB 1-1520-240-20-70).
261246Z APR 94, BRAD MEYER, AMSAT-C-XS, X2085.
NOTE: Enter a "Q" + <CR> to exit or <SPACEBAR> to view
the entire message. (REPORTING)
.
01 11 261246Z APR 94 PP PP UUUU (CORRECTED COPY)
:
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 KATHMANDU NP//SAO//
:USDAO SINGAPORE SN
ACCT
:
TEXT
:UNCLAS
UNCLAS
THIS IS A CORRECTED COPY
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY, RCS
CSGLD-1860(R1), ALL CH47D, MH47D AND MH47E HELICOPTERS, ONE TIME AND
RECURRING INSPECTION OF PUMPING UNIT, HYDRAULIC, (CH-47-94-ASAM-06)
(TB 1-1520-240-20-70).
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 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 ALL
LEVELS (DEPOT AND OTHERS) -N/A.
2. TASK/INSPECTION SUSPENSE DATE - WITHIN 10 FLIGHT HOURS OR 14
DAYS FROM THE DATE OF THIS MESSAGE, WHICHEVER OCCURS FIRST.
3. REPORTING COMPLIANCE SUSPENSE DATE - REPORT COMPLIANCE NO
LATER THAN 17 MAY 94 PER PARA 14A OF THIS MESSAGE.
4. SUMMARY OF PROBLEM -
NOTE
THIS IS A REISSUE OF CH-47-93-ASAM-03. IN ADDITION THIS
MESSAGE ESTABLISHES RECURRING INSPECTIONS.
A. ATCOM HAS RECEIVED REPORTS FROM THE FIELD OF LEAKING AND
PRESSURE FLUCTUATIONS BEING EXPERIENCED WITH THE STRATO-POWER
HYDRAULIC PUMPS. A TYPICAL SCENARIO IS AS FOLLOWS: DURING NORMAL
FLIGHT, THE HYDRAULIC SYSTEM PRESSURE INDICATES PRESSURE
FLUCTUATIONS 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.
B. THE SUSPECT PUMPS ARE MANUFACTURED BY STRATO-POWER AND THE
SERIAL NUMBERS HAVE A SUFFIX "BO", NSN 1650-01-249-4341, P/N
64WE075102 AND OR 938555. FURTHER INFORMATION AND INSTRUCTIONS WILL
BE DISSEMINATED AS SOON AS IT IS AVAILABLE. REPORT ALL FAILURES THRU
QDR SYSTEM.
C. THE CH-47 HAS 3 HYDRAULIC PUMPS ON BOARD AND ANY ONE IS
CAPABLE OF POWERING THE FLIGHT CONTROLS. POWER TRANSFER UNIT (PTU)
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 IMPLEMENT RECURRING INSPECTIONS, TO INSPECT
PUMP SERVICABILITY. THE CH-47D HAS A TRIPLE REDUNDANT SYSTEM. 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 1650-01-249-4341
PUMPING UNIT, HYDRAULIC 64WE075102 1650-01-249-4341
7. PARTS TO BE INSPECTED - N/A.
8. INSPECTION PROCEDURES - INSPECTION TO BE PERFORMED REPETITIVELY
ON A 10 FLIGHT HOUR/14 DAY BASIS.
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. 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 LOGISTICAL POC
PARA 16B BELOW.
9. CORRECTION PROCEDURES - TO BE DETERMINED.
NOTE
A COPY OF THIS MESSAGE WILL BE PLACED IN THE AIR CREW
INFORMATION READING FILE, AND BRIEFED TO ALL CREW MEMBERS.
10. SUPPLY/PARTS AND DISPOSITION -
A. PARTS REQUIRED - ITEMS CITED IN PARA 6 MAY BE REQUIRED TO
REPLACE DEFECTIVE ITEMS.
NOTE
STRATO-POWER PUMPS WILL BE ISSUED AS REPLACEMENTS DUE TO A
SHORTAGE IN THE SUPPLY SYSTEM OF VICKERS PUMPS. ONE OF THE KNOWN
PROBLEMS WITH STRATO-POWER PUMPS IS THAT THE SCREWS HOLDING THE
COMPENSATOR VALVE SHEAR OFF. THIS IS DUE TO A SHARP EDGE ON THE
SCREW HOLE SETTING UP STRESS RISERS.
B. REQUISITIONING INSTRUCTIONS - REQUISITION REPLACEMENT PARTS
THROUGH NORMAL SUPPLY CHANNELS USING NORMAL SUPPLY PROCEDURES. ALL
REQUISITIONS SHALL USE PROJECT CODE "XAK" PER THIS MESSAGE.
NOTE
PROJECT CODE "XAK" IS REQUIRED TO TRACK COSTS AND ESTABLISH A DATA
BASE OF STOCK FUND EXPENSE INCURRED BY THE FIELD AS A RESULT OF
ASAM/SOF ACTIONS.
C. BULK AND CONSUMABLE MATERIALS - N/A.
D. DISPOSITION - DISPOSE OF REMOVED PARTS/COMPONENTS IN
ACCORDANCE WITH NORMAL SUPPLY PROCEDURES. A QDR IS REQUIRED. HOLD
ANY UNSERVICEABLE PART/COMPONENT PENDING DISPOSITION INSTRUCTIONS
FROM TECHNICAL/LOGISTICAL POINT OF CONTACT PER PARA 16 BELOW.
E. DISPOSITION OF HAZARDOUS MATERIAL - N/A.
11. SPECIAL TOOLS, JIGS AND FIXTURES REQUIRED - N/A.
12. APPLICATION -
A. CATEGORY OF MAINTENANCE - AVUM. AIRCRAFT DOWNTIME WILL BE
CHARGED TO AVUM.
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 - TM 55-1520-240-23-PM SHALL BE CHANGED TO INCLUDE THIS
RECURRING INSPECTION REQUIREMENT. A COPY OF THIS MESSAGE WILL BE
PLACED IN THE AIR CREW 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 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. THE FOLLOWING FORMS ARE APPLICABLE AND ARE TO BE COMPLETED
IN ACCORDANCE WITH DA PAM 738-751, 15 JUN 92 -
(1) DA FORM 2408-13, AIRCRAFT STATUS INFORMATION RECORD.
(2) DA FORM 2408-13-1, AIRCRAFT INSPECTION AND
MAINTENANCE RECORD.
(3) DA FORM 2408-15, HISTORICAL RECORD FOR AIRCRAFT.
(4) DA FORM 2408-18, EQUIPMENT INSPECTION LIST.
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. MIKE
WRIGHT, SFAE-AV-CH-T, DSN 693-3550 OR COMMERCIAL 314/263-3550.
B. LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. NORM
HUSTON, SFAE-AV-CH-L, DSN 693-1415 OR COMMERCIAL 314/263-1415.
DATAFAX IS DSN 693-1485.
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 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 MW5
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.