ASN Wikibase Occurrence # 370899
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Sunday 19 June 1988 |
| Time: | 17:00 LT |
| Type: |  Hughes 369D |
| Owner/operator: | Denver Helicopter |
| Registration: | N1109P |
| MSN: | 1100849D |
| Total airframe hrs: | 2890 hours |
| Engine model: | Allison 250-C20B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Horn Lake, MS -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Holly Springs, MS |
| Jonesboro, AR (KJBR) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
BFR TKOF, THE HELICOPTER WAS SVCD WITH 100LL FUEL (AN APPROVED ALTN FUEL IF THE BOOST PUMP IS USED IN FLT). DRG FLT, THEENG LOST PWR. AN AUTOROTATION WAS MADE IN TALL VEGETATION, BUT DRG THE LNDG, THE MAIN ROTOR BLADES SEVERED THE TAIL BOOM. AN INSPN OF THE FUEL SYS REVEALED NO EVIDENCE OF CONTAMINATION. THE PNEUMATIC SYS WAS PRESSURE-TESTED & NO LEAKS WERE FND. POST-ACDNT ATMTS TO START THE ENG WERE UNSUCCESSFUL UNTIL THE FUEL SYS WAS PURGED OF AIR. IT THEN STARTED & OPERATED NORMALLY FOR ABOUT 5 MIN, BUT THE FUEL PUMP WAS FOUND TO BE UNSERVICEABLE WITH WORN SEALS & BEARINGS. A BENCH CHECK SHOWED THE FUEL PUMP HAD A FLOW RATE OF 700 PPH AT 600 PSI, THE PUMP SHOULD HAVE HAD A MIN FLOW RATE OF 1269 PPH. ALSO, THE POWER TURBINE GOVERNOR WAS FND TO BE SLIGHTLY OUT OF ADJUSTMENT & A FUEL NOZZLE HAD EXCESSIVE STREAKS & VOIDS IN ITS SPRAY PATTERN. PERSONNEL AT THE MANUFACTURER BELIEVED THE ENG MAY HAVE LOST PWR DUE TO A COMBINATION OF A WORN FUEL PUMP & THE USE OF 100LL FUEL ON A 94 DEG DAY OR FROM VAPOR LOCK.
Probable Cause:
Accident investigation:
 |
|
Sources:
NTSB MIA88LA198
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 25-Mar-2024 15:58 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation