Cessna 172 N171AS
11 March 1997 · Marquette, Michigan, United States · Minor injuries
Summary
On 11 March 1997 at about 18:30 local time, a Cessna 172 registered N171AS, operated by ANS Aviaiton, was involved in an accident near Marquette, Michigan, United States. One person was on board and one 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 18:30
- Classification
- Accident
- Location
- Marquette, Michigan, United States
- Coordinates
- 46.5498, -87.3897
- Aircraft
- Cessna 172
- Registration
- N171AS
- Category
- Airplane
- Engines
- 1
- Operator
- ANS Aviaiton
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Instructional
- Phase of flight
- Not recorded
- Route
- Manistique → Iron Mountain
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- CHI97LA085
People
1 person had minor injuries.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 1 | 0 | 0 | 1 | 0 |
Probable cause
multiple oil leaks in the engine lubrication system. Factors were the disconnected wet vacuum pump line and the oil exhaustion.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The pilot reported that smoke started to enter the cabin from the heater vent. He shut the vent and scanned the engine instruments. He noted there was 'no oil pressure.' The engine 'started running very rough and shaking.' He 'shut the engine down to minimize vibration...established best glide angle' and conducted a forced landing in a wooded swamp. The airplane sustained substantial damage during the landing. Examination of the wreckage revealed the 'lower oil separator hose' was not connected to the wet vacuum pump. The number one and two connecting rod bolts were necked and fractured. Corresponding holes were punched in the crankcase. The left magneto gasket and the starter motor mounting flange exhibited evidence of oil leakage. Combustion deposits and spark plugs in the number three cylinder exhibited evidence of 'possible high oil consumption.' The operator of the airplane reported that he had 'topped off' the engine oil prior to the origination of the accident flight.
Quoted verbatim from the NTSB record.
Other Cessna 172 accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Jun 1997 | Cessna 172P | Fowlerville, Michigan, United States | - | No injuries | - |
| 15 Jul 1997 | Cessna 172N | Lakeland, Florida, United States | - | No injuries | - |
| 20 Jul 1997 | Cessna 172M | Athens, Tennessee, United States | Michael B. Guest | No injuries | - |
| 24 Nov 1997 | Cessna 172N | La Jolla, California, United States | Richard Jones | Fatal | 1 |
| 8 Aug 1997 | Cessna 172P | Rockhill, South Carolina, United States | Scott S. Fisher | Minor injuries | - |
| 22 Mar 1997 | Cessna 172 | Middletown, Ohio, United States | Barbara F. Schmidt | No injuries | - |
All 12,209 records for this type
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 29 Jun 1997 | Dietrich NIEUPORT 12 | Byron, Michigan, United States | - | Serious injuries | - |
| 5 Jul 1997 | Cessna 170B | Karlin, Michigan, United States | - | Fatal | 2 |
| 6 Jul 1997 | Piper PA-18 | Middleville, Michigan, United States | - | Fatal | 2 |
| 7 Jul 1997 | Piper PA-17 | Cadillac, Michigan, United States | - | No injuries | - |
| 5 Jul 1997 | Piper PA-34-200 | MacKinac Island, Michigan, United States | - | No injuries | - |
| 28 Jul 1997 | Stratton CHALLENGER II | Bellaire, Michigan, United States | - | Fatal | 1 |