Safety of Flight CH-47-91-02

 

         

                                SYNOPSIS

CH-47-91-02  SAFETY OF FLIGHT MESSAGE, TECHNICAL, CH-47D, MH-47D AND

             MH-47E AIRCRAFT, UPDATE TO CH-47-91-01 TO IDENTIFY

             SERVICEABLE COMBINER TRANSMISSIONS AND ENGINE TRANSMISSIONS

             (TB 55-1520-240-20-55 WILL BEE REVISED).

             151500Z MAY 91, BRAD MEYER, AMSAV-XSOF, X9089.

 
01  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
               CDRAVSCOM ST LOUIS MO  //AMSAV-XSOF//
 
               AIG 8881
 
               AIG 9004
 
               AIG 8708
 
               AIG 9042
 
               CDR 321ST //MMC-AV//
 
               DCMDS ATLANTA MARIETTA GA  //DMCDS-HPF//
 
               CDR 4-228 AVN SOTO CANO //AVN-AMO//
 
               102 ARMY AVIATION FACILITY SCOTT AFB IL 
 
                    //AFKB-AC-CJ-ASF//
 
               ARCENT SPT CMD //AMC-AVSCOM/G4-AVN//
 
               DCMDN BOSTON MA  //DCMDN-QS//
 
               COMUSARCENT MAIN //AFRD-PA-S/G3-AVN/G4-AVN//
 
        INFO   DEFAIROCAS CANBERRA AS  //ORHEL-AF//
 
               DEFAIRENG CANBERRA AS  //DAIRENG-AF//
 
               DEFARM CANBERRA AS //DOHS-A//
 
               DEFNAV CANBERRA AS
 
               SRUSARSG CANBERRA AS
 
               HQLCENG MELBOURNE AS  //DAIRENG//
 
 
 
SFAE-AV-CH, AMSAV-ECC, AMSAV-I-RAAF, AMSAV-MEA, AMSAV-LRC
 
 
 
  BRAD MEYER
  AMSAV-XSOF, X9089
 
 
  EDWARD J. HOLLMAN
  CHIEF, SAFETY OFFICE
.
 
                                      UNCLAS
 
 
02  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
               LOG CON OTTAWA CAN  //DTHEM 6-3//
 
               AUSTNAV WASHINGTON DC //DEFNAV//
 
               AUSTRAIR WASHINGTON DC  //SENGSO//
 
               OMC CAIRO EGYPT  //AV//
 
               DQMSO ATLANTA MARIETTA GA  //DQMSO-S//
 
               ODC ATHENS GR  //ODCSA-A//
 
               CDR AMCCOM ROCK ISL IL  //AMSAR-QAS-P//
 
               CHMUSLO RABAT MO/AF
 
               CHUSAS RIYADH SA //ASAV//
 
               ODC MADRID SP //ARMY AND NAVY SEC//
 
               CJUSMAG BANGKOK TH
 
               CDRUSARDSG LONDON UK //AMXSN-UK-SE//
 
               CDRAMC ALEXANDRIA VA  //AMCMR/AMCCS/AMCSM-WAA//
 
        XMT    USDA0 DHAKA BG
 
               USDAO RANGOON BM
 
               USDAO COLOMBO CE
 
               USCINCPAC REP SUVA FJ
 
               USADAO JAKARTA ID //MADP//
 
               AMEMBASSY NEW DELHI IN //DSA//
 
.
 
                                      UNCLAS
 
 
03  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
               AMEMB PORT MORESBY PAPUA NEW GUINEA
 
               USDAO KATMANDU NP
 
UNCLAS
 
AIG 9004 TAKE FOR INFO ONLY
 
AIG 8708 TAKE FOR INFO ONLY
 
AIG 9042 TAKE FOR INFO ONLY
 
SUBJECT - SAFETY-OF-FLIGHT MESSAGE, TECHNICAL, RCS CSGLD-1860(R1) 
 
CH-47D, MH-47D  AND MH-47E AIRCRAFT, UPDATE TO CH-47-91-01 TO 
 
IDENTIFY SERVICEABLE COMBINER TRANSMISSIONS AND ENGINE TRANSMISSIONS 
 
(CH-47-91-02)  (TB 55-1520-240-20-55 WILL BE REVISED) 
 
NOTE - THIS IS A SAFETY-OF-FLIGHT MESSAGE AND 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 THIS MESSAGE.  ACTION ADDRESSEES WILL IMMEDIATELY 
 
VERIFY THIS RETRANSMISSION TO COMMANDER, AVSCOM, ATTN - 
 
AMSAV-XSOF(SOF COMPLIANCE OFFICER).
 
1.  PRIORITY CLASSIFICATION - 
 
    A.  AIRCRAFT IN USE - N/A.
 
.
 
                                      UNCLAS
 
 
04  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
    B.  AIRCRAFT IN DEPOT MAINTENANCE - N/A. 
 
    C.  AIRCRAFT UNDERGOING MAINTENANCE - N/A.
 
    D.  AIRCRAFT IN TRANSIT - 
 
        (1)  SURFACE/AIR SHIPMENT - N/A.
 
        (2)  FERRY STATUS - N/A.
 
    E.  MAINTENANCE TRAINERS (CATEGORY A, B AND C) - MAINTENANCE 
 
TRAINERS SHOULD HAVE PERFORMED INSPECTION IAW SAFETY OF FLIGHT 
 
MESSAGE CH-47-91-01. 
 
    F.  COMPONENT/PARTS IN STOCK INCLUDING WAR RESERVES AT ALL 
 
LEVELS (DEPOT AND OTHERS) - N/A.
 
2.  TASK/INSPECTION SUSPENSE DATE - N/A.
 
3.  REPORTING COMPLIANCE SUSPENCE DATE - N/A.
 
4.  SUMMARY OF PROBLEM -
 
    A.  SAFETY 0F FLIGHT (SOF) MESSAGE CH-47-91-01 DIRECTED THAT 
 
COMBINER TRANSMISSIONS AND ENGINE TRANSMISSIONS WITH SPECIFIED 
 
SERIAL NUMBERS AND GEARS WITH A "P" (PAPA) PREFIX WERE 
 
UNSERVICEABLE.  ALL REQUIREMENTS OF SOF MESSAGE CH-47-91-01 REMAIN 
 
VALID.
 
    B.  INSPECTION PROCEDURES HAVE NOW BEEN DEVELOPED TO INSPECT
.
 
                                      UNCLAS
 
 
05  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
GEARS IN THESE TRANSMISSIONS AT DEPOT LEVEL.  GEARS THAT PASS 
 
INSPECTION WILL HAVE A //DG//, //DGC// OR //DGS// AT THE END OF THE 
 
GEAR SERIAL NUMBER.  TRANSMISSION HISTORICAL RECORD WILL STATE THE 
 
INSTALLED GEAR SERIAL NUMBER.  ALL TRANSMISSIONS WITH A "M" (MIKE) 
 
IN FRONT OF THE GEAR SERIAL NUMBER ARE CONSIDERED SERVICEABLE.
 
    C.  THE TRANSMISSION LIST IN SOF MESSAGE CH-47-91-01 IS NOW 
 
UPDATED.  SOME TRANSMISSIONS HAVE BEEN DELETED BECAUSE THEY ARE NOT 
 
IN THE ARMY INVENTORY.  SOME TRANSMISSIONS HAVE BEEN ADDED BECAUSE 
 
UNITS HAVE REPORTED ADDITIONAL TRANSMISSIONS CONTAINING GEARS HAVING 
 
A SERIAL NUMBER WITH A PREFIX "P" (PAPA) IAW SOF MESSAGE 
 
CH-47-91-01.
 
    D.  THE PURPOSE OF THIS MESSAGE IS TO INFORM UNITS THAT 
 
TRANSMISSIONS LISTED IN PARA 9C WITH //DG//, //DGC// OR //DGS// AT 
 
THE END OF THE GEAR SERIAL NUMBER ARE CONSIDERED SERVICEABLE EVEN 
 
THOUGH THE GEAR HAS A "P" (PAPA) PREFIX.
 
5.  END ITEMS TO BE AFFECTED - ALL CH-47D, MH-47D AND MH-47E 
 
AIRCRAFT. 
 
6.  ASSEMBLY COMPONENTS TO BE AFFECTED -
 
    NOMENCLATURE              PART NO.                NSN
 
.
 
                                      UNCLAS
 
 
06  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
COMBINER TRANSMISSION      145D5300-10           1615-01-315-4069
 
COMBINER TRANSMISSION      145D5300-11           1615-01-315-9365
 
COMBINER TRANSMISSION      145D5300-13           1615-01-310-4980
 
COMBINER TRANSMISSION      145D5300-5            1615-01-216-3828
 
COMBINER TRANSMISSION      145D5300-3            1615-01-114-0850
 
COMBINER TRANSMISSION      145D5300-12           1615-01-310-4981
 
ENGINE TRANSMISSION        145D6300-3            1615-01-146-5273
 
ENGINE TRANSMISSION        145D6300-2            1615-01-119-3373
 
ENGINE TRANSMISSION        145D6300-9            1615-01-315-4070
 
ENGINE TRANSMISSION        145D6300-8            1615-01-320-6787
 
ENGINE TRANSMISSION        145D6300-6            1615-01-271-0663
 
ENGINE TRANSMISSION        145D6300-7            1615-01-271-7601
 
ENGINE TRANSMISSION        145D6300-10           1615-01-319-3959
 
ENGINE TRANSMISSION        145D6300-11           1615-01-315-9364
 
7.  PARTS TO BE AFFECTED - 
 
    NOMENCLATURE              PART NO.                NSN
 
    COMBINER GEAR           145D5305-3          3040-01-232-7777
 
    COMBINER PINION         145D5306-3          3040-01-228-1730
 
    ENGINE PINION           145D6301-2          3040-01-114-9452
 
.
 
                                      UNCLAS
 
 
07  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
    ENGINE GEAR             145D6302-2          3040-01-114-9453
 
8.  INSPECTION PROCEDURES - N/A.
 
9.  CORRECTION PROCEDURES -
 
                                 NOTE
 
ALL REQUIREMENTS OF SOF MESSAGE CH-47-91-01 REMAIN VALID.  
 
    A.  TRANSMISSIONS IN PARA 9C WILL BE DEPOT LEVEL INSPECTED FOR 
 
CRACKS IN SUSPECT GEARS.  GEARS WITH CRACKS WILL BE DESTROYED AND 
 
REPLACED.
 
    B.  TRANSMISSIONS LISTED IN PARA 9C WITH GEARS THAT PASS 
 
INSPECTION WILL HAVE //DG//, //DGC// OR //DGS// AT THE END OF THE 
 
GEAR SERIAL NUMBER.  THE GEAR SERIAL NUMBER WILL BE ENTERED ON DA 
 
FORM 2408-16 (TRANSMISSION).  TRANSMISSIONS LISTED IN PARA 9C WITH 
 
//DG//, //DGC// OR //DGS// AT THE END OF THE GEAR SERIAL NUMBER AS 
 
ENTERED ON DA FORM 2408-16 (TRANSMISSION) ARE CONSIDERED SERVICEABLE 
 
EVEN THOUGH THE GEAR HAS A "P" (PAPA) PREFIX.
 
                                 NOTE
 
ANY TRANSMISSION WITH A "M" (MIKE) AT THE FRONT OF THE GEAR SERIAL 
 
NUMBER IS CONSIDERED SERVICEABLE.
 
    C.  THE FOLLOWING TRANSMISSION LIST IS UPDATED FROM SOF MESSAGE
.
 
                                      UNCLAS
 
 
08  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
CH-47-91-01.  SOME TRANSMISSIONS HAVE BEEN DELETED BECAUSE THEY ARE 
 
NOT IN THE ARMY INVENTORY.  SOME TRANSMISSIONS HAVE BEEN ADDED 
 
BECAUSE UNITS HAVE REPORTED ADDITIONAL TRANSMISSIONS CONTAINING 
 
GEARS HAVING A SERIAL NUMBER WITH A PREFIX "P" (PAPA) IAW SOF 
 
MESSAGE CH-47-91-01.
 
       ENGINE TRANSMISSION SERIAL NUMBERS
 
A11-680                A11-760                A11-866
A11-681                A11-767                A11-867
A11-682                A11-773                A11-874
A11-683                A11-774                A11-876
A11-685                A11-775                A11-877
A11-686                A11-776                A11-879
A11-687                A11-783                A11-882
A11-688                A11-784                A11-883
A11-701                A11-785                A11-884
A11-704                A11-786                A11-885
A11-707                A11-789                A11-886
                                              
 
                                              
                                              
 
                                      UNCLAS
 
 
09  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
A11-708                A11-790                A11-887
A11-709                A11-791                A11-888
A11-710                A11-792                A11-889
A11-711                A11-795                A11-910
A11-712                A11-796                A11-911
A11-722                A11-797                A11-912
A11-725                A11-798                A11-924
A11-726                A11-807                A11-925
A11-729                A11-808                A11-936
A11-731                A11-809                A11-937
A11-732                A11-810                A11-938
A11-740                A11-811                A11-939
A11-743                A11-850                A11-944
A11-744                A11-851                A11-972
A11-747                A11-852                A11-973
A11-748                A11-853                A11-976
A11-754                A11-860                
A11-759                A11-861                
                                              
 
                                              
                                              
 
                                      UNCLAS
 
 
10  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
       COMBINING TRANSMISSION SERIAL NUMBERS
 
A8-153                 A8-382                 A8-425
A8-209                 A8-383                 A8-430
A8-318                 A8-394                 A8-431
A8-324                 A8-397                 A8-434
A8-329                 A8-398                 A8-436
A8-334                 A8-399                 A8-448
A8-347                 A8-400                 A8-453
A8-354                 A8-401                 A8-454
A8-359                 A8-402                 A8-455
A8-368                 A8-403                 A8-465
A8-370                 A8-406                 A8-468
A8-371                 A8-407                 A8-473
A8-372                 A8-408                 A8-478
A8-375                 A8-409                 A8-480
A8-379                 A8-416                 A8-481
A8-381                 A8-417                 A8-482
                                              
 
                                              
                                              
 
                                      UNCLAS
 
 
11  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
10.  SUPPLY/PARTS AND DISPOSITION -
 
    A.  PARTS REQUIRED - ITEMS CITED IN PARAGRAPH 6 MAY BE REQUIRED 
 
TO REPLACE DEFECTIVE ITEMS.
 
    B.  REQUISITIONING INSTRUCTIONS - REQUISITION REPLACEMENT PARTS 
 
THROUGH NORMAL SUPPLY CHANNELS USING NORMAL SUPPLY PROCEDURES.
 
    C.  BULK AND CONSUMABLE MATERIALS - N/A.
 
    D.  DISPOSITION - N/A.
 
    E.  DISPOSITION OF HAZARDOUS MATERIAL - N/A.
 
11.  SPECIAL TOOLS, JIGS AND FIXTURES REQUIRED - N/A.
 
12.  APPLICATION -
 
    A.  CATEGORY OF MAINTENANCE - N/A.
 
    B.  TIME REQUIRED - N/A.
 
    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 - TB 1-1500-341-01, AIRCRAFT COMPONENTS REQUIRING
.
 
                                      UNCLAS
 
 
12  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
MAINTENANCE MANAGEMENT AND HISTORICAL DATA REPORTS, DTD 26 NOV 91 
 
SHALL BE CHANGED TO REQUIRE ENTRY OF GEAR SERIAL NUMBER ON 2408-16 
 
(TRANSMISSION).  A COPY OF THIS MESSAGE SHALL BE INSERTED IN THE 
 
APPROPRIATE PUBLICATION AS AUTHORITY TO IMPLEMENT THE CHANGE UNTIL 
 
THE PRINTED CHANGE IS RECEIVED.
 
13.  REFERENCES - AVSCOM MESSAGE, DTG 022300Z APR 91, SUBJECT - 
 
SAFETY OF FLIGHT MESSAGE, EMERGENCY, RCS CSGLD-1860(R1), ALL CH-47D, 
 
MH-47D AND MH-47E AIRCRAFT, ONE TIME INSPECTION AND REMOVAL OF 
 
COMBINER TRANSMISSIONS AND ENGINE TRANSMISSIONS CONTAINING SUSPECT 
 
INPUT PINIONS AND GEARS (CH-47-91-01) (TB 1-1520-240-20-55).
 
14.  RECORDING AND REPORTING REQUIREMENTS -
 
    A.  REPORTING COMPLIANCE SUSPENSE DATE (AIRCRAFT) - N/A.
 
    B.  TASK/INSPECTION REPORTING SUSPENSE DATE (AIRCRAFT) - N/A. 
 
    C.  REPORTING SUSPENSE DATE (SPARES) - N/A.
 
    D.  TASK/INSPECTION REPORTING SUSPENSE DATE (SPARES) - N/A.
 
    E.  THE FOLLOWING FORMS ARE APPLICABLE AND ARE TO BE COMPLETED 
 
IN ACCORDANCE WITH DA PAM 738-751, 15 JAN 88 - DA FORM 2408-15, 
 
HISTORICAL RECORD FOR AIRCRAFT.
 
15.  WEIGHT AND BALANCE - N/A.
 
.
 
                                      UNCLAS
 
 
13  13  151500Z MAY  91  OO  PP  UUUU              ZEXW   1351200Z
 
YES
 
16.  POINTS OF CONTACT -
 
    A.  TECHNICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. ROBERT 
 
LAWYER, AMSAV-ECC, DSN 693-1639 OR COMMERCIAL 314/263-1639.
 
    B.  LOGISTICAL POINT OF CONTACT FOR THIS MESSAGE IS MR. RICHARD 
 
MOHS, SFAE-AV-CH-L, DSN 693-1415 OR COMMERCIAL 314/263-1415 AND 
 
DATAFAX 314/263-1485.
 
    C.  FORMS AND RECORDS POINT OF CONTACT FOR THIS MESSAGE IS MR. 
 
BOB BITER, AMSAV-MPPD, DSN 693-1955 OR COMMERCIAL 314/263-1955.
 
    D.  POINT OF CONTACT FOR THIS MESSAGE IS MR. BRAD MEYER, 
 
AMSAV-XSOF, DSN 693-9089 OR COMMERCIAL 314/263-9089.
 
    E.  FOREIGN MILITARY SALES (FMS) RECIPIENTS REQUIRING 
 
CLARIFICATION OF ACTION ADVISED BY THIS MESSAGE SHOULD CONTACT MR. 
 
RON VAN REES, AMSAV-IOA, DSN 693-2626 OR COMMERCIAL 314/263-2626.
 
    F.  POINT OF CONTACT IN SOUTHWEST ASIA IS MR. J. NANCE, 
 
COMMERCIAL 3-843-43-43, EXT 240 (IN COUNTRY).
 
    G.  AFTER HOURS CONTACT AVSCOM COMMAND OPERATIONS CENTER (COC) 
 
DSN 693-2066/7 OR COMMERCIAL 314/263-2066/7.