ASN Wikibase Occurrence # 147282
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| Date: | Wednesday 1 August 2012 |
| Time: | 11:20 |
| Type: |  Beechcraft H35 Bonanza |
| Owner/operator: | Private |
| Registration: | N4684D |
| MSN: | D-4867 |
| Year of manufacture: | 1956 |
| Engine model: | Continental O-470 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Near Holly Lake Ranch Airport - 16TE, Hawkins, Texas -
 United States of America
|
| Phase: | Landing |
| Nature: | Executive |
| Departure airport: | Mineola, TX (JDD) |
| Gilmer, TX (JXI) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane’s engine lost power during the descent to the destination airport, and the airplane struck trees during the ensuing forced landing attempt. A postaccident examination of the engine revealed that the idler gear pin was not in position and no retaining bolts were found. Additionally, the nuts from the forward left, lower through bolt on the crankcase half and the forward left engine mount bolt were missing. A logbook entry indicated that the engine had been reassembled and re-installed on the airplane about 1 week before the accident due to a previous propeller strike. Based on the available information, it is likely that the improper assembly of the engine, specifically the omission of the idler gear pin retaining bolts, resulted in the idler gear falling out of its position and a subsequent complete loss of engine power.
Probable Cause: The incomplete maintenance performed by maintenance personnel, which resulted in a total loss of engine power.
Accident investigation:
 |
|
Sources:
NTSB
FAA register: https://www.cbs19.tv/story/19170921/small-engine-plane-crash-reported-near-holly-lake_
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=4684D
https://www.faa.gov/data_research/accident_incident/preliminary_data/events01/media/02_4684D.txt
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 01-Aug-2012 16:14 | Geno | Added |
| 02-Aug-2012 08:24 | Geno | Updated [Nature, Source, Narrative] |
| 21-Dec-2016 19:28 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 28-Nov-2017 13:19 | ASN Update Bot | Updated [Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative] |
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