Helicopter UH-1H 67-17418

Information on U.S. Army helicopter UH-1H tail number 67-17418
The Army purchased this helicopter 0468
Total flight hours at this point: 00000584
Date: 11/09/68
Accident case number: 681109091 Total loss or fatality Accident
Unit: 71 AHC
The station for this helicopter was Chu Lai in
Number killed in accident = 0 . . Injured = 0 . . Passengers = 0
costing 228554
Source(s) from which the incident was created or updated: Army Aviation Safety Center database.

Crew Members:
AC W1 HOLLY RF
P W1 POWELL WA

Accident Summary:

 AIRCRAFT ^UH-1, 67-17418^ AND CREW WERE ASSIGNED A MISSION TO MAKE A VIP PASSENGER PICKUP AT ^DA NANG^ MAIN AIRFIELD AND RETURN TO ^MARBLE MOUNTAIN AIRFIELD^. AT APPROXIMATELY ^0915^ HOURS, THE AIRCRAFT TOOK OFF WITH SIX PASSENGERS ABOARD AND 600 POUNDS OF FUEL. THE AVAILABLE FUEL WAS MORE THAN ENOUGH FOR THE ANTICIPATED 20 MINUTES FLYING TIME REQUIRED FOR THIS MISSION. AS THERE WERE SEVERAL RAIN SHOWERS IN THE AREA AND A LOW CEILING, THE AIRCRAFT COMMANDER REQUESTED AND RECEIVED A SPECIAL VFR CLEARANCE FROM ^MARBLE MOUNTAIN TO DA NANG MAIN AIRFIELD^. AT SOME TIME ALMOST IMMEDIATELY AFTER TAKEOFF, THE "T" HEAD BOLT ON THE CLAMP ASSEMBLY FAILED ALLOWING THE CLASP ASSEMBLY TO VIBRATE LOOSE AND THE MAIN FUEL FILTER BOWL TO SEPARATE FROM THE FILTER SEAT. SYSTEM FUEL PRESSURE FORCED FUEL OUT OF THIS SEPARATION. ENTERING THE TRAFFIC PATTERN AT ^DA NANG MAIN^, THE AIRCRAFT COMMANDER NOTED 400 POUNDS OF FUEL REMAINING PRIOR TO THE "20 MINUTE FUEL" WARNING LIGHT COMING ON AND DECIDED TO RETURN TO ^MARBLE MOUNTAIN^. MAINTENANCE FACILITIES ARE AVAILABLE AT ^MARBLE MOUNTAIN^ AND DURATION OF FLIGHT TO RETURN WAS APPROXIMATELY 5 MINUTES. THE HEAVY SMELL OF FUEL FUMES CONFIRMED THE AIRCRAFT COMMANDERS CONCLUSION THAT THERE WAS A FUEL LEAK EVEN THOUGH THERE WAS NO DISCERNABLE EXTERIOR FUEL LEAKAGE. AFTER SETTING DOWN AT ^MARBLE MOUNTAIN AIRFIELD^, THE DENSITY OF THE FUMES APPARENTLY WAS TOUCHED OFF BY CONTACT WITH THE ENGINE EXHAUST. JP-4 FUEL FUMES HAVE A LOW FLASH POINT. THE EXTENT OF FIRE DAMAGE TO THE TAIL BOOM INDICATES THAT THE FUEL WAS CARRIED BACK INTO THE TAIL BOOM WHILE THE AIRCRAFT WAS IN FLIGHT. IMMEDIATE SHUTDOWN OF THE HELICOPTER CUT OFF THE FUEL SYSTEM PRESSURE, HOWEVER APPROXIMATELY 150 TO 175 POUNDS OF FUEL APPARENTLY WAS TRAPPED IN THE INNER COMPARTMENTS AND THE TAIL BOOM WHEN THE FUMES FLASHED INTO FIRE. THE RAPID REACTION TIME OF THE FIRE FIGHTERS PRECLUDED FURTHER DAMAGE TO THE AIRFRAME.\\


War Story:
Although this helicopter was written off as the result of this incident, it was later rebuilt and returned to service

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Information on U.S. Army helicopter UH-1H tail number 67-17418
Date: 710500
South Vietnam
UTM grid coordinates: XU795114
Original source(s) and document(s) from which the incident was created or updated: Defense Intelligence Agency Helicopter Loss database. Also: VNAF (South Vietnamese Air Force. )
Loss to Inventory

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The following is Goldbook information on US Army helicopter UH-1H tail number 67-17418
It is provided here as an ESTIMATE of the history of this helicopter and is not intended to be the final authority.
This helicopter was purchased by the US Army in 0468.
Please provide any additional information on this helicopter to the VHPA.

DATE  FLT HRS    UIC      UNIT          AREA          POST          COUNTRY
6804   0    0 W0Y6AA OS TO CONUS      ITR CONUS                   AVCOMITR
6805  52   52 WARTAA 71STASLT HEL CO  VIETNAM                     RVN     
6806 138  190 WARTAA 71STASLT HEL CO  VIETNAM                     RVN     
6807  83  273 WARTAA 71STASLT HEL CO  VIETNAM                     RVN     
6808  57  330 WARTAA 71STASLT HEL CO  VIETNAM                     RVN     
6809 161  491 WARTAA 71STASLT HEL CO  VIETNAM                     RVN     
6810  85  576 WARTAA 71STASLT HEL CO  VIETNAM                     RVN     
6811   8  584 WE4HAA 142 TC DS        VIETNAM                     RVN     
6812   0  584 W0Y6AA OS TO CONUS      ITR CONUS                   AVCOMITR 
6901   0  584 W0MUAA ARADMAC          IN TRANSIT NAVAL AIR STN    AVCOM         
6902   0  584 W0MUAA ARADMAC          IN STORAGE NAVAL AIR STN    AVCOM          
6903   0  584 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
6904   0  584 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
6905   0  584 3300   HHD 44 ENG GP    THAILAND                    PACIFIC 
6906  83  667 WAB3A0 CO A 101 AVN BN  VIETNAM                     RVN     
6907 101  768 WAB3A0 CO A 101 AVN BN  VIETNAM                     RVN     
6908 113  881 WAB3A0 CO A 101 AVN BN  VIETNAM                     RVN     
6909  87  968 WAB3A0 A-101 AHB 101AB  VIETNAM                     RVN     
6910  74 1042 WAB3A0 A-101 AHB 101AB  VIETNAM                     RVN     
6911  78 1120 WAB3A0 A-101 AHB 101AB  VIETNAM                     RVN     
6912  48 1168 WAB3A0 A-101 AHB 101AB  VIETNAM                     RVN     
7001  73 1241 WAB0T0 2SQ 17AC 101ACD  VIETNAM                     RVN     
7002  28 1269 WAB0T0 2SQ 17AC 101ACD  VIETNAM                     RVN     
7003  84 1353 WAB0T0 2SQ 17AC 101ACD  VIETNAM                     RVN     
7004  79 1432 WAB0T0 2SQ 17AC 101ACD  VIETNAM                     RVN     
7005  13 1445 WAB0T0 2SQ 17AC 101ACD  VIETNAM                     RVN     
7006   0 1445 WE4HAA 142 TC DS        VIETNAM                     RVN     
7007   0 1445 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
7008   0 1445 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
7009   0 1445 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
7010   0 1445 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
7011   0 1445 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
7012   4 1449 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVCOM        
7101   9 1458 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVSCOM        
7102   6 1464 W0MUAA ARADMAC          IN MAINT   NAVAL AIR STN    AVSCOM        
7103   0 1464 WHB1AA 166 TRANS CO     VIETNAM                     RVN     

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Please send additions or corrections to:

Gary Roush
43 Overbrook Road
Painted Post, NY 14870

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Printed from databases on: 01/25/99

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