01 14 222239Z MAR 95 PP PP UUUU
:
FROM
:CDRATCOM ST LOUIS MO//AMSAT-R-X//
TO
:AIG 6713
:AIG 9004
:AIG 8708
:AIG 9042
:AIG 7471
:AIG 12124
:DEFAIR MATERIAL CANBERRA AS//DAAP-AF//
:ARMYLMSQN OAKEY AS
:AVCEN OAKEY AS//DAVN-A//
: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//
:102DARMY SCOTT AFB IL//AFRC-AMO-ASF-IL//
: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//
:SPAIN ARMY FMS MADRID SP
:AIT TAIPEI TW
:TAIWAN ARMY FMS TAIPEI TW
:CJUSMAG THAI BANGKOK TH//MAGTAR-FS//
:ROYAL THAI ARMY FMS BANGKOK TH
: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
:USCINCPAC REP PHNOM PENH CB
:USDAO COLOMBO CE
:USDAO SUVA FJ
:OMADP JAKARTA ID
:DSA NEW DELHI IN
:AMEMBASSY ANTANANARIVO MA
:AMEMBASSY PORT LOUIS
:SAO KUALA LUMPUR MY
:AMEMBASSY KATHMANDU NP//POL-MIL//
:AMEMBASSY VICTORIA
:SAO SINGAPORE SN
ACCT
:
TEXT
:UNCLAS
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE
MANDATORY, RCS CSGLD-1860(R1), ALL CH-47D, MH-47D, AND MH-
47E HELICOPTERS, ONE TIME INSPECTION FOR STRATOPOWER PUMPS,
NSN 1650-01-249-4341 AND REPORTING FOR TURNAROUND PROGRAM,
(CH-47-95-ASAM-04) (TB 1-1520-240-20-75)
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-R-X (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/CORRECTION OF
PARA 8 AND 9 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 -
(1) SURFACE/AIR SHIPMENT - PRIOR TO FIRST
FLIGHT.
(2) FERRY STATUS - SAME AS PARA 1A. THOSE
AIRCRAFT THAT HAVE A DD250 AND ARE AT BOEING HELICOPTER
COMPANY WILL BE INSPECTED PRIOR TO FERRY TO FINAL
DESTINATION.
E. MAINTENANCE TRAINERS (CATEGORY A AND B) - SAME AS
PARA 1A.
F. COMPONENT/PARTS IN STOCK INCLUDING WAR RESERVES AT
ALL LEVELS (DEPOT AND OTHERS) - PERFORM
INSPECTION/CORRECTION IAW PARA 8 AND 9. REPORT IAW PARA
14D.
2. TASK/INSPECTION SUSPENSE DATE - WITHIN 10 HOURS/14 DAYS.
3. REPORTING COMPLIANCE SUSPENSE DATE - NO LATER THAN 12
APR 95 PER PARA 14A OF THIS MESSAGE.
4. SUMMARY OF PROBLEM -
A. ATCOM HAS RECEIVED NUMEROUS REPORTS FROM THE FIELD
OF LEAKING AND PRESSURE FLUCTUATIONS BEING EXPERIENCED WITH
THE STRATOPOWER HYDRAULIC PUMPS. A TYPICAL SCENARIO IS THE
FOLLOWING: DURING NORMAL FLIGHT, THE HYDRAULIC SYSTEM
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.
B. AN INTENSIVE INVESTIGATION HAS BEEN COMPLETED,
RESULTING IN DESIGN CHANGES TO THE STRATOPOWER PUMP FOR
IMPROVED RELIABILITY OF THE PUMP. THE INVESTIGATION
REVEALED FRICTION BETWEEN THE COUNTER BALANCE SLEEVE AND
PISTON, FAILURE OF THE COUNTERBALANCE SLEEVE IN FATIGUE THAT
CAUSED EXTERNAL LEAKAGE AND PREVENTED FREE MOVEMENT OF THE
COUNTER BALANCE PISTON, AND FAILURE OF THE COMPENSATOR
HOUSING MOUNTING SCREW(S) IN FATIGUE. AN ENGINEERING CHANGE
PROPOSAL WAS DEVELOPED TO CREATE A NEW COUNTER BALANCE
PISTON, SLEEVE AND SEAT, PUMP HOUSING, CONTROL PISTON,
COMPENSATOR ASSEMBLY MOUNTING SCREWS, COMPENSATOR HOUSING
AND PILOT SPOOL, AND MATCHED COMPENSATOR HOUSING/SPOOL
ASSEMBLY. EXTENSIVE BENCH TESTING (300 HOURS) AND FIELD
TESTING (12 MODIFIED PUMPS HAVE ACCUMULATED OVER 3000 FLIGHT
HOURS AND STILL ON-GOING WITHOUT FAILURE) HAVE RESULTED IN A
FULL QUALIFICATION APPROVAL FOR THE NEW DESIGN FEATURES.
C. FOR MANPOWER/DOWNTIME AND FUNDING IMPACTS SEE PARA
12.
D. THE PURPOSE OF THIS MESSAGE IS TO DIRECT THE FIELD
AND THE SUPPLY DEPOTS TO LOCATE STRATOPOWER HYDRAULIC PUMPS
AND REPORT TO THE LOGISTICAL POINT OF CONTACT SO A
TURNAROUND PROGRAM CAN BE ESTABLISHED.
5. END ITEMS TO BE INSPECTED - ALL CH-47D, MH-47D, MH-47E
AIRCRAFT.
6. ASSEMBLY COMPONENTS TO BE AFFECTED (STRATOPOWER PUMPS) -
NOMENCLATURE PART NO. NSN
PUMPING, UNIT, HYDRAULIC 938555 1650-01-249-4341
PUMPING, UNIT, HYDRAULIC 64WE075102 1650-01-249-4341
NOTE
THE BOEING HELICOPTER PART NUMBER FOR THE ABOVE
IS 145HS100-3.
7. PARTS TO BE INSPECTED - N/A.
8. INSPECTION PROCEDURES - PERFORM A ONE TIME VISUAL
INSPECTION OF DATAPLATES FOR PART NUMBER AND NSN ON ALL
THREE HYDRAULIC PUMPS. REFERENCE TM 55-1520-240-23P, FIGURE
178, ITEM 12 (1 PUMP) AND FIGURE 183, ITEM 26 (2 PUMPS).
9. CORRECTION PROCEDURES -
A. IF THE PUMP IS NOT, REPEAT, NOT ONE OF THOSE LISTED
IN PARA 6, THE INSPECTION IS COMPLETE.
B. IF THE PUMP IS ONE OF THOSE LISTED IN PARA 6,
REPORT TO THE LOGISTICAL POINT OF CONTACT IAW PARA 14B. IT
IS NOT NECESSARY TO REPORT VICKERS PUMPS. THE REPORT SHALL
INCLUDE THE AIRCRAFT SERIAL NUMBER, PUMP SERIAL NUMBER, PART
NUMBER, FIELD UNIT LOCATION, AND POINT OF CONTACT.
NOTE
THE TWELVE MODIFIED STRATOPOWER TEST PUMPS THAT HAVE BEEN
FLYING UNDER AN AIRWORTHINESS RELEASE WITH THE PART NUMBER
OF 145HS100-3, SERIAL NUMBER BO-XXX-CO OR AO-XX-CO, DO NOT
HAVE TO BE REPORTED. THE LOGISTICAL POINT OF CONTACT WILL
PROVIDE INSTRUCTIONS FOR REMARKING THE SERIAL NUMBER AND
PART NUMBER.
C. THE LOGISTICAL POINT OF CONTACT WILL ESTABLISH A
TURNAROUND PROGRAM WITH FIELD UNITS AND WILL PRIORITIZE THE
DISTRIBUTION OF NEW PUMPS. THEY WILL PROVIDE INSTRUCTIONS
TO THE INDIVIDUAL FIELD UNIT POC'S WHEN THE NEW PUMPS ARE
AVAILABLE FOR DISTRIBUTION. INSTRUCTIONS WILL ALSO BE
PROVIDED FOR SHIPMENT OF THE OLD PUMPS TO STRATOPOWER FOR
MODIFICATION.
D. NEW PUMPS THAT ARE MANUFACTURED WILL HAVE A
STRATOPOWER PART NUMBER OF 939733, A BOEING PART NUMBER OF
145HS100-4, AND A SERIAL NUMBER WITH A PREFIX OF "A1".
MODIFIED PUMPS WILL HAVE THE NEW STRATOPOWER PART NUMBER OF
939733, BOEING PART NUMBER OF 145HS100-4, AND A SERIAL
NUMBER WITH A SUFFIX OF "A1".
E. DO NOT REMOVE THE PUMPS FROM THE AIRCRAFT UNTIL THE
NEW OR MODIFIED PUMPS HAVE BEEN RECEIVED. NEW OR MODIFIED
PUMPS SHALL BE CHANGED OUT WITHIN 7 DAYS OF ACCEPTANCE.
AFTER CHANGING THE PUMP, CONTACT LOGISTICAL POINT OF CONTACT
FOR SHIPPING INSTRUCTIONS. IT IS ESSENTIAL THAT THE PUMPS
BE RETURNED TO STRATOPOWER IN AN EXPEDIENT MANNER TO
MAINTAIN THE SCHEDULE FOR MODIFICATION.
F. THE PROJECTED COMPLETION DATE FOR THE TURNAROUND
PROGRAM IS 1 YEAR FROM THE DATE OF THIS MESSAGE.
10. SUPPLY/PARTS AND DISPOSITION - 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. ESTIMATED TIME REQUIRED -
(1) TOTAL OF 0.5 MANHOURS USING 1 PERSON.
(2) TOTAL OF 0.5 HOURS DOWNTIME FOR ONE END ITEM.
C. ESTIMATED COST IMPACT OF STOCK FUND ITEMS TO THE
FIELD - NONE. REPLACEMENT PUMPS ARE FREE ISSUE.
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 AND TM 55-1520-240-23P
SHALL BE CHANGED TO REFLECT THIS MESSAGE. A NOTE SHALL BE
ADDED IN THE MANUAL TO INDICATE THAT P/N 938555 IS NO LONGER
THE CORRECT CONFIGURATION AFTER THE COMPLETION OF THE
TURNAROUND PROGRAM. A COPY OF THIS MESSAGE SHALL BE
INSERTED IN THE APPROPRIATE TM AS AUTHORITY TO IMPLEMENT THE
CHANGE UNTIL THE PRINTED CHANGE IS RECEIVED.
13. REFERENCES -
A. TM 55-1520-240-23, AVIATION UNIT AND INTERMEDIATE
MAINTENANCE MANUAL, CH-47D HELICOPTER, DTD 10 MAY 83, C48 30
JUL 92.
B. TM 55-1520-240-23P-1, AVIATION UNIT AND
INTERMEDIATE MAINTENANCE MANUAL, CH-47D HELICOPTER, DTD 1
NOV 89, C6 30 DEC 94.
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-
R-X (SOF COMPLIANCE OFFICER), PER AR 95-3. DATAFAX NUMBER
IS DSN 693-2064 OR COMMERCIAL 314/263-2064. E-MAIL ADDRESS
IS "AMSATRXS (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.
B. TASK/INSPECTION REPORTING SUSPENSE DATE (AIRCRAFT)
- UPON COMPLETION OF INSPECTION, UNITS HAVING STRATOPOWER
PUMPS WILL FORWARD A PRIORITY MESSAGE OR DATAFAX 314/263-
1485 OR DSN 693-1485 TO: COMMANDER, ATCOM, ATTN: AMCPM-CH-L
(MR. MIKE MELLIERE OR MR. NORM HUSTON). THE REPORT WILL
CITE AIRCRAFT SERIAL NUMBER, PUMP SERIAL NUMBER, PART
NUMBER, FIELD UNIT LOCATION AND POINT OF CONTACT.
C. REPORTING COMPLIANCE SUSPENSE DATE (SPARES) - N/A.
D. TASK/INSPECTION REPORTING SUSPENSE DATE (SPARES) -
UPON COMPLETION OF INSPECTION, ORGANIZATIONS HAVING
STRATOPOWER PUMPS IN RETAIL OR WHOLESALE STOCK WILL FORWARD
A PRIORITY MESSAGE OR DATAFAX 314/263-1485 OR DSN 693-1485
TO: COMMANDER, ATCOM, ATTN: AMCPM-CH-L (MR. MIKE MELLIERE
OR MR. NORM HUSTON). THE REPORT WILL CITE AIRCRAFT SERIAL
NUMBER, PUMP SERIAL NUMBER, PART NUMBER, ORGANIZATIONS
LOCATION AND POINT OF CONTACT.
E. 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 2408-13-2, RELATED MAINTENANCE
ACTIONS RECORD.
(4) DA FORM 2408-15, HISTORICAL RECORD FOR
AIRCRAFT.
(5) DD FORM 1576/1576-1, TEST/MODIFICATION
TAG/LABEL - MATERIAL (COLOR BLUE). (SPARES ONLY)
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR.
MR. DAVID BRAUN, SAIC CONTRACTOR, OR MR. MIKE WRIGHT, AMSAT-
R-ECC, DSN 693-3550 OR COMMERCIAL 314/263-3550.
B. LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR.
MIKE MELLIERE OR MR. NORM HUSTON , AMCPM-AV-CH-L, DSN 693-
1901 OR COMMERCIAL 314/263-1901. DATAFAX IS 314/263-1485 OR
DSN 693-1485
C. FORMS AND RECORDS POINT OF CONTACT FOR THIS MESSAGE
IS MS. ANN WALDECK, AMSAT-I-MDM, DSN 693-1821/1758 OR
COMMERCIAL 314/263-1821/1758.
D. SAFETY POINT OF CONTACT FOR THIS MESSAGE IS MR.
BRAD MEYER, AMSAT-R-X, DSN 693-2085 OR COMMERCIAL 314/263-
2085.
E. FOREIGN MILITARY SALES (FMS) RECIPIENTS REQUIRING
CLARIFICATION OF ACTION ADVISED BY THIS MESSAGE SHOULD
CONTACT CW5 JAY NANCE/MR. RON VAN REES, AMSAT-I-IAF, DSN 693-
3826/3659 OR COMMERCIAL 314/263-3826/3659.
F. AFTER HOURS CONTACT ATCOM COMMAND OPERATIONS CENTER
(COC) DSN 693-2066/7 OR COMMERCIAL 314/263-2066/7.