Cessna 207 N9956M
29 May 1998 · Bethel, Alaska, United States · No injuries
Summary
On 29 May 1998 at about 23:57 local time, a Cessna 207 registered N9956M was involved in an accident near Bethel, Alaska, United States. One person was on board and nobody was injured. 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 23:57
- Classification
- Accident
- Location
- Bethel, Alaska, United States
- Coordinates
- 60.8100, -161.8507
- Aircraft
- Cessna 207
- Registration
- N9956M
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 135: Air Taxi & Commuter
- Purpose of flight
- Unknown
- Phase of flight
- Not recorded
- Route
- Unknown → Tununak
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- ANC98LA059
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 0 | 1 |
Probable cause
The throttle arm disconnecting from the throttle linkage to the engine as a result of inadequate inspection by company maintenance personnel. Factors associated with this accident were the company maintenance personnel not following the repetitive Service Bulletin inspection, and the inadequate design of the throttle arm by the manufacturer.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
During climb to cruise while passing 2,000 feet msl, the engine lost total power. The airplane nosed onto its back during the subsequent forced landing in marshy tundra. Postaccident inspection revealed wear between the throttle arm and the connecting hardware bushing. The throttle control lever had disconnected from the throttle arm. Service Bulletin SEB95-15R1, 'Throttle Lever Inspection,' that required a visual inspection for wear between the arm and bushing each 50 hours or 12 months, had been complied with 56 hours, 163 hours, and 268 hours prior to the accident by company mechanics. The newly overhauled engine was installed 334 hours prior to the accident.
Quoted verbatim from the NTSB record.
Other Cessna 207 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 6 Feb 1998 | Cessna 207 | Homer, Alaska, United States | - | Fatal | 1 |
| 9 Jun 1998 | Cessna 207A | Juneau, Alaska, United States | - | No injuries | - |
| 22 Apr 1998 | Cessna 207A | Scammon Bay, Alaska, United States | Hageland Aviation Services Inc | Minor injuries | - |
| 22 May 1998 | Cessna 207 | Quinhagak, Alaska, United States | - | No injuries | - |
| 20 Jun 1998 | Cessna 207 | Holy Cross, Alaska, United States | Inland Aviation Services Inc. | No injuries | - |
| 17 Jul 1998 | Cessna 207 | King Salmon, Alaska, United States | - | Minor injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 11 Nov 1998 | Boeing 747-400 | Anchorage, Alaska, United States | Asiana Airlines | Minor injuries | - |
| 3 Nov 1998 | Piper PA-12 | Willow, Alaska, United States | - | No injuries | - |
| 11 Nov 1998 | Piper PA-18-150 | Kenai, Alaska, United States | - | No injuries | - |
| 28 Apr 1998 | Taylorcraft BL12 | Sitka, Alaska, United States | - | Fatal | 1 |
| 14 May 1998 | Cessna 208 | Nome, Alaska, United States | Baker Aviation Inc. | Serious injuries | - |
| 15 May 1998 | Cessna 172M | Palmer, Alaska, United States | - | Fatal | 2 |