Beechcraft V35A N8469N
14 August 1995 · Chimacum, Washington, United States · Minor injuries
Summary
On 14 August 1995 at about 03:20 local time, a Beechcraft V35A registered N8469N was involved in an accident near Chimacum, Washington, United States. 4 people were on board and 3 had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 03:20
- Classification
- Accident
- Location
- Chimacum, Washington, United States
- Coordinates
- 47.9697, -122.7796
- Aircraft
- Beechcraft V35A
- Registration
- N8469N
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Olympia → Port Townsend
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA95LA183
People
3 people had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 4 | 0 | 0 | 3 | 1 |
Probable cause
the improper top overhaul of the engine and subsequent release of the cylinder hold-down nuts/breakage of hold-down and through-bolts. Factors contributing to the accident were the fence posts and rough/uneven terrain.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
During flight the pilot encountered an engine vibration, and shortly thereafter oil began appearing on the windscreen. While maneuvering toward suitable terrain the #2 cylinder departed the aircraft. A forced landing was made to a field. The aircraft impacted several fence posts, and the landing gear collapsed as it traversed rough/uneven terrain. Engine records documented a top overhaul of the engine approximately 172 hours before, during which the cylinders were removed and replaced. Metallurgical examination revealed that several cylinder hold-down nuts had backed off their bolts, or the bolts had separated in fatigue, allowing the cylinder to break free of the engine case. The mechanic reported using a silicone sealant between the cylinders and their respective engine case halves. Application of the uncalled-for sealant between the cylinders and case halves could result in a reduction or elimination of the preload torque applied to the through-bolts and hold-down studs.
Quoted verbatim from the NTSB record.
Other Beechcraft V35A accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 1 Mar 1995 | Beechcraft V35A | Nassau, Bahamas | Rowland, Richard H | No injuries | - |
| 29 Jan 1995 | Beechcraft V35A-TC | Pembina, North Dakota, United States | - | No injuries | - |
| 10 Mar 1996 | Beechcraft V35A | Clinton, Louisiana, United States | - | Serious injuries | - |
| 21 Sep 1996 | Beechcraft V35A-TC | Santa Ynez, California, United States | - | No injuries | - |
| 5 Oct 1997 | Beechcraft V35A | West Lafayette, Indiana, United States | - | Serious injuries | - |
| 27 Aug 1993 | Beechcraft V35A | Knoxville, Tennessee, United States | - | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 4 Jul 1995 | Hughes 369HS | Orting, Washington, United States | Helicopter Specialty | Serious injuries | - |
| 5 Jul 1995 | Cessna 182R | Copalis Beach, Washington, United States | - | No injuries | - |
| 6 Jul 1995 | Aero Commander S2R | Odessa, Washington, United States | Smith Air, Inc. | No injuries | - |
| 3 Jul 1995 | Champion 7GCBC | Moses Lake, Washington, United States | - | Minor injuries | - |
| 9 Jul 1995 | Wheeler KITFOX V | Silvana, Washington, United States | - | Fatal | 2 |
| 15 Jul 1995 | Piper PA-28-160 | Kent, Washington, United States | - | No injuries | - |