# NTSB IAD98LA078: Mastopietro Rans S12, N6191V, Phillips, ME, July 9, 1998

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: July 9, 1998, 13:00 local (17:00 UTC)
- Place: Phillips, ME
- Location: 44.8231° N, 70.3395° W: Placed by OpenAirDocs: center of Phillips, ME, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=44.8231&lon=-70.3395&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report March 31, 2000
- Report: Approved by Office Director
- NTSB case key (mKey): 43182
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=IAD98LA078
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/43182/pdf
- Page: https://openairdocs.org/ntsb/IAD98LA078

## Probable cause

Loss of engine power due to a separated oil line.  A related factor was the unsuitable field.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power, cruise
  - lubricating system,oil line - separation (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, emergency landing
  - terrain condition - none suitable (contributing factor)

## Analysis

The student pilot was cruising at 400 feet AGL, photographing fields, when the engine initially quit.  He performed the emergency procedures for a loss of engine power, the engine restarted, and he tried to climb, but the engine quit a second time.  A forced landing was then performed to a hay field. The wreckage was examined by an FAA Inspector.  The examination revealed the linkage that connected the oil feed line to the uncertificated two cycle engine had separated.

## Factual narrative

On July 9, 1998, at 1300 eastern daylight time, a homebuilt Rans S12, N6191V, was substantially damaged when it collided with terrain during a forced landing near Phillips, Maine.  The certificated student pilot and passenger were seriously injured.  Visual meteorological conditions prevailed and a flight plan was not filed.  The local, personal flight, was conducted under 14 CFR Part 91, and originated at a private grass strip in Phillips, Maine.

The student pilot reported that he was cruising at 400 feet AGL, photographing fields, when the engine initially quit.  He performed the emergency procedures for a loss of engine power, the engine restarted, and he tried to climb, but the engine quit a second time.  A forced landing was then performed to a hay field.

The wreckage was examined by an FAA Inspector.  The examination revealed the linkage that connected the oil feed line to the uncertificated two cycle engine had separated.

The student pilot reported 40 hours of total flight experience including four hours in make and model.

## Aircraft

- Registration: [N6191V](https://openairdocs.org/deregistered/N6191V-2013-07-30), registration cancelled 2013-07-30, S/N 0892259, built 1993 (OpenAirDocs)
- Reported make and model: Mastopietro RANS S12
- Registry model: [Mastopietro Kurt RANS S12 AIRAILE](https://openairdocs.org/model/mastopietro-kurt-rans-s12-airaile) (registry code 056223R) (OpenAirDocs)
- Registry engine: [Bombardier ROTAX (ALL)](https://openairdocs.org/engine/bombardier-rotax-all) (registry code 09050, reciprocating) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 0892259
- Airframe hours: 190
- Engines: Rotax 65 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Randy D Walker
- Registered owner: Douglas Lisherness
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, August 21, 1997, 115 hours before
- Departed: NONE, ME

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; student; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 40 total, 4 in this make and model, 23 as pilot in command

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: variable at 3 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 79 °F, dew point 54 °F
- Altimeter: 29.00 inHg
- Observed at: BGR, 75 nm away

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19980709046569A](https://openairdocs.org/incident/19980709046569A), Jul 9, 1998: Phillips, ME, No damage. (-23) Mr. Walker was operating this aircraft for approximately 3 hours. He field twice during his flight. During his last flight, the engine quit. Mr. Walker…

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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