ASN Wikibase Occurrence # 166488
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: | Thursday 22 May 2014 |
| Time: | 11:30 |
| Type: |  Beechcraft H35 Bonanza |
| Owner/operator: | Oldham C Richard |
| Registration: | N4689D |
| MSN: | D-4874 |
| Year of manufacture: | 1956 |
| Total airframe hrs: | 4939 hours |
| Engine model: | Continental IO-470 |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Near Avi Suquilla Airport (P20), Parker, AZ -
 United States of America
|
| Phase: | Landing |
| Nature: | Private |
| Departure airport: | Quartzsite, AZ (15AZ) |
| Parker, AZ (P20) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and pilot-rated owner were operating the airplane in cruise flight when the engine lost power. They manipulated the engine and fuel controls in an attempt to regain engine power, but the engine would not restart. They subsequently conducted a forced landing onto rough terrain. During the landing roll, the nose landing gear folded underneath the airplane, and the right wing sustained substantial damage.
The engine was test run, and it would not maintain power unless the electric boost pump was operating. During a postrun examination of the engine, the fuel return line from the engine-driven fuel pump was found loose at the pump connection, and fuel was noted dripping from the rigid fuel line near the pump connection. The line was removed, and the “B” nut ferrule was found cracked. The “B” nut and the fuel pump fitting threads were damaged. The fuel pump and fuel control assembly were found intact, and, during a test run, functioned properly. During testing of the fuel manifold valve, a leak was observed at the vent port, indicating that the diaphragm was compromised. Based on this evidence, it is likely that the improperly attached fuel return line on the fuel pump and the leak from the fuel manifold valve led to a loss of pressure in the engine fuel delivery system, which resulted in the loss of engine power. The investigation could not determine when or by whom the maintenance was performed.
Probable Cause: The improperly attached fuel line and cracked fuel diaphragm due to unknown personnel’s inadequate maintenance, which resulted in the loss of engine power during cruise flight and the subsequent forced landing onto rough terrain.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=4689D
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-May-2014 01:08 | Geno | Added |
| 30-May-2014 05:23 | Geno | Updated [Time, Aircraft type, Registration, Cn, Phase, Nature, Departure airport, Destination airport, Source, Damage, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 29-Nov-2017 14:23 | ASN Update Bot | Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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