01 12 141621Z MAY 98 PP PP UUUU AA ZYUW
FROM
:CDRAMCOM REDSTONE ARSENAL AL//AMSAM-SF-A//
TO
:AIG 8881
TEXT
:UNCLAS
SUBJECT - AVIATION SAFETY ACTION MESSAGE, MAINTENANCE MANDATORY,
RCS CSGLD-1860(R1), C/MH-47D/E, ONE TIME INSPECTION FOR AFT
TRANSMISSIONS WITH SUSPECTED IMPROPERLY SHIMMED INPUT PINION GEAR
ASSEMBLY, (CH-47-98-ASAM-04) (TB 1-1520-240-20-102).
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 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 - SAME AS PARA 1A.
(2) FERRY STATUS - SAME AS PARA 1A.
E. MAINTENANCE TRAINERS (CATEGORY A AND B) SAME AS PARA 1A.
F. COMPONENT/PARTS IN STOCK AT ALL LEVELS (DEPOT AND OTHERS)
INCLUDING WAR RESERVES -
(1) WHOLESALE STOCK - WHOLESALE STOCK HAS BEEN INSPECTED
FOR SUSPECT TRANSMISSIONS.
(2) RETAIL STOCK - REPORT RECEIPT OF THIS MESSAGE IAW
PARAGRAPH 14C(2). UPON RECEIPT OF THIS MESSAGE COMMANDERS AND
OTHERS MAINTAINING RETAIL STOCK AT INSTALLATION LEVEL AND BELOW
SHALL CONTACT THE SUPPORTED AVIATION UNIT TO PERFORM THE INSPECTION
REQUIRED BY PARAGRAPH 8. REPORT COMPLIANCE WITH THIS MESSAGE IAW
PARAGRAPH 14D(2).
G. COMPONENTS/PARTS IN WORK (DEPOT LEVEL AND OTHERS) -
ITEMS LISTED IN PARAGRAPHS 6 IN WORK WILL NOT BE ISSUED UNTIL
COMPLIANCE WITH THIS MESSAGE IS COMPLETE. REPORT COMPLIANCE WITH
THIS MESSAGE IAW PARAGRAPH 14D(2).
2. TASK/INSPECTION SUSPENSE DATE - WITHIN NEXT 10 FLIGHT HOURS/14
DAYS.
3. REPORTING COMPLIANCE SUSPENSE DATE - 5 JUN 98.
4. SUMMARY OF PROBLEM -
A. DETAILED INVESTIGATION HAS IDENTIFIED TWENTY THREE AFT
TRANSMISSIONS THAT HAVE BEEN OVERHAULED WITH IMPROPER SHIMMING OF
THE INPUT SHAFT. THIS DEFICIENCY CAUSES EXCESSIVE VIBRATION OF THE
TRANSMISSION AND PREMATURE WEAR OF THE INPUT PINION GEAR AND ITS
MATING GEAR. THE SHIMMING PROCEDURE HAS BEEN CORRECTED BY TOOL
MODIFICATION, AND ALL AFT TRANSMISSIONS OVERHAULED AFTER 8 DEC 97
ARE NOT CONSIDERED SUSPECT. THE REFERENCE MESSAGE/MEMORANDUM IN
PARAGRAPH 13 WAS SENT IN ATTEMPT TO LOCATE THESE SPECIFIC
TRANSMISSIONS AND EXPEDITE THE PROCESS. IT HAD SOME SUCCESS IN
LOCATING SOME OF THE TWENTY THREE TRANSMISSIONS. THIS MESSAGE
REQUIRES A VISUAL CHECK OF THE TRANSMISSION DATA PLATE.
B. FOR MANPOWER/DOWNTIME AND FUNDING IMPACTS SEE PARA 12.
C. THE PURPOSE OF THIS MESSAGE IS TO PERFORM A ONE TIME
INSPECTION OF ALL AFT TRANSMISSIONS WITH THE PURPOSE OF FINDING
SUSPECT IMPROPERLY SHIMMED AFT TRANSMISSIONS AND TO PROVIDE TIME
SINCE OVERHAUL OF TRANSMISSION, AIRCRAFT SERIAL NUMBER, AND
TRANSMISSION SERIAL NUMBER. A SERIAL NUMBER LISTING OF THE
SUSPECT AFT TRANSMISSIONS ARE LISTED IN PARA 8.
5. END ITEMS TO BE INSPECTED - ALL C/MH-47D/E AIRCRAFT.
6. ASSEMBLY COMPONENTS TO BE INSPECTED -
NOMENCLATURE PART NO. NSN
AFT TRANSMISSION ASSY 145D2300-3 1615-01-216-3829
AFT TRANSMISSION ASSY 145D2300-4 1615-01-307-4842
AFT TRANSMISSION ASSY 145D2300-5 1615-01-296-3091
AFT TRANSMISSION ASSY 145D2300-7 1615-01-315-4071
7. PARTS TO BE INSPECTED - N/A
8. INSPECTION PROCEDURES -
NOTE
UNITS WHICH HAVE PERFORMED A VISUAL SERIAL
NUMBER INSPECTION OF AFT TRANSMISSIONS DATA
PLATE PER PARAGRAPH 13 MESSAGE MAY ENTER THIS
ASAM AS HAVING BEEN COMPLIED WITH ON THE
AIRCRAFT RECORDS.
A. VISUALLY INSPECT ALL AFT TRANSMISSIONS FOR THE FOLLOWING
SERIAL NUMBERS:
A9-022 A9-035 A9-036 A9-046 A9-052
A9-055FO A9-058 A9-088FO A9-105FO2 A9-122
A9-127 A9-129FO A9-132 A9-140FO A9-161
A9-216 A9-253FO A9-260FO A9-291 A9-375
A9-513 A9-572 A9-605
NOTE
THE DATA PLATE ON THE TRANSMISSION MUST BE
CHECKED TO VERIFY CORRECT SERIAL NUMBER.
AIRCRAFT RECORD CHECKS ALONE ARE NOT SUFFICIENT
AND WILL NOT BE USED.
B. ONCE CORRECTED BY DEPOT MAINTENANCE, THESE SERIAL NUMBERED
TRANSMISSIONS WILL BE IDENTIFIED WITH A "BG" ON THE OVERHAUL METAL
CAL/DATA PLATE. ALSO DA FORMS 2410 REFLECTING A OVERHAUL DATE OF 8
DEC 97 WILL INDICATE THE TRANSMISSION SHIMMING PROBLEM HAS BEEN
CORRECTED.
9. CORRECTION PROCEDURES - CONTACT THE LOGISTICAL POC LISTED AT
PARA 16B IAW PARA 14B. NEGATIVE REPORTS ARE REQUIRED.
10. SUPPLY/PARTS AND DISPOSITION -
A. PARTS REQUIRED - ITEMS CITED IN PARAGRAPH 6 MAY BE REQUIRED
TO REPLACE DEFECTIVE ITEMS.
B. REQUISITIONING INSTRUCTIONS - CONTACT LOGISTICAL POINT OF
CONTACT IN PARAGRAPH 16B FOR REQUISITIONING INSTRUCTIONS. ALL
REQUISITIONS SHALL USE PROJECT CODE (CC 57-59) "XDZ", "X-RAY-
DELTA-ZULU".
NOTE
PROJECT CODE "XDZ", "X-RAY-DELTA-ZULU" 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 - HOLD IN STOCK, OR IF INSTALLED, CONTINUE
USING ON AIRCRAFT ANY DISCREPANT PART/COMPONENT PENDING
DISPOSITION INSTRUCTIONS FROM LOGISTICAL POINT OF CONTACT IN
PARAGRAPH 16B.
E. DISPOSITION OF HAZARDOUS MATERIAL - N/A.
11. SPECIAL TOOLS AND FIXTURES REQUIRED - N/A.
12. APPLICATION -
A. CATEGORY OF MAINTENANCE - AVUM.
B. ESTIMATED TIME REQUIRED -
(1) TOTAL OF .5 MAN-HOURS USING 1 PERSON.
(2) NO DOWNTIME REQUIRED.
C. ESTIMATED COST IMPACT TO THE FIELD - N/A.
D. TB/MWOS TO BE APPLIED WITH THIS INSPECTION - N/A.
E. PUBLICATIONS WHICH REQUIRE CHANGE AS A RESULT OF THIS
INSPECTION - N/A.
13. REFERENCE - MESSAGE, PEOAVN, 8 JAN 98, SUBJECT: SEARCH FOR
CH-47 AFT TRANSMISSIONS, CH-47 PM MEMO 98-01.
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 35898-5222, IAW AR 95-1. DATAFAX NUMBER IS
DSN 897-2111 OR (205) 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) -
UPON COMPLETION OF INSPECTION, UNITS WILL FORWARD A PRIORITY
MESSAGE TO LOGISTICAL POC IN PARA 16B. THE REPORT WILL CITE THIS
MESSAGE NUMBER, DATE OF INSPECTION, AIRCRAFT SERIAL NUMBER,
SUSPECT TRANSMISSION SERIAL NUMBER, TSO OF SUSPECT TRANSMISSION,
ALONG WITH LOCAL POC AND TELEPHONE NUMBER. INSPECTION AND
REPORTS WILL BE COMPLETED NO LATER THAN 5 DAYS AFTER
TASK/INSPECTION SUSPENSE DATE. A NEGATIVE REPORT IS REQUIRED.
C. REPORTING MESSAGE RECEIPT (SPARES) -
(1) MATERIEL IN WHOLESALE DEPOT STORAGE - N/A
(2) MATERIEL IN RETAIL STORAGE - REPORT RECEIPT OF THIS
MESSAGE BY E-MAIL OR DATAFAX TO THE LOGISTICAL POINT OF CONTACT
LISTED IN PARAGRAPH 16B WITHIN 7 DAYS FROM THE DATE OF THIS
MESSAGE. PROVIDE LOCAL POINT OF CONTACT.
D. TASK/INSPECTION REPORTING SUSPENSE DATE (SPARES).
(1) MATERIEL IN WHOLESALE DEPOT STORAGE - N/A
(2) MATERIEL IN RETAIL STORAGE - REPORT COMPLIANCE WITH
THIS MESSAGE BY EMAIL OR DATAFAX TO THE LOGISTICAL POINT OF CONTACT
IN PARAGRAPH 16B WITHIN 14 DAYS OF THE DATE OF THIS MESSAGE. THE
REPORT WILL CITE THIS MESSAGE NUMBER, DATE OF INSPECTION, SUSPECT
TRANSMISSION SERIAL NUMBERS, TSO OF SUSPECT TRANSMISSION, ALONG WITH
POC AND TELEPHONE NUMBER. A NEGATIVE REPORT IS REQUIRED.
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 2408-5-1, EQUIPMENT MODIFICATION RECORD
(COMPONENT).
(2) DA FORM 2408-13, AIRCRAFT STATUS INFORMATION RECORD.
(3) DA FORM 2408-13-1, AIRCRAFT INSPECTION AND
MAINTENANCE RECORD.
(4) DA FORM 2408-15, HISTORICAL RECORD FOR AIRCRAFT.
(5) DA FORM 2408-16, AIRCRAFT COMPONENT HISTORICAL RECORD.
(6) DA FORM 2410, COMPONENT REMOVAL AND REPAIR/OVERHAUL
RECORD.
15. WEIGHT AND BALANCE - N/A.
16. POINTS OF CONTACT -
A. TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. LARRY
WIESCHHAUS, AMSAM-AR-E-I-C-H, DSN 897-4296 OR (256) 313-4296,
DATAFAX IS DSN 897-4348. E-MAIL IS
"WIESCHHAUSL@AVRDECR.REDSTONE.ARMY.MIL".
B. THE LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR.
NORM HUSTON, SFAE-AV-CH-L, DSN 897-4289 OR (256) 313-4289.
E-MAIL IS "HUSTONN@PEOAVN.REDSTONE.ARMY.MIL".
C. THE WHOLESALE MATERIEL POINT OF CONTACT (SPARES) IS MR.
ED HOLTER, AMSAM-MMC-VS-UC, DSN 897-1125 OR (256) 313-1125,
DATAFAX IS DSN 897-1558. E-MAIL IS "HOLTER-EC@REDSTONE.ARMY.MIL".
D. THE 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.E-MAIL IS "WALDECK-AB@EXCHANGE1.
REDSTONE.ARMY.MIL".
E. THE SAFETY POINT OF CONTACT FOR THIS MESSAGE IS MR.
HOWARD CHILTON AMSAM-SF-A, DSN 313-2068 OR (256) 313-2068.
DATAFAX IS DSN 897-2111. E-MAIL IS "CHILTON-HL@REDSTONE.ARMY.MIL"
ALTERNATE POC IS MR. TENG OOI, AMSAM-SF-A, DSN 897-2094 OR
(256) 313-2094. E-MAIL IS "OOI-TK@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
"WITTSTROM-JL@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 "SAMMONS-RW@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.