- Date
- March 10, 1998, 09:00 local (17:00 UTC)
- Place
- Lone Pine, CA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N1659EAeronca 7AC
- Weather
- Visual (VMC) · Day
- Status
- Completed · report February 15, 2001
- Report
- Approved by Office Director
- FAA report
- 19980310002889A
- Case key
- 30049
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The failure of maintenance personnel to properly tighten the magneto clamps during installation of the engine on the aircraft following engine overhaul.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The pilot reported that as the aircraft climbed through about 3,000 feet agl the engine began to misfire, then lost almost all power. Following an unsuccessful attempt to restore normal engine power, the pilot set up for a glide toward an abandoned airfield. With insufficient altitude to make the airfield, the pilot landed in a pasture and collided with bushes and hidden obstacles in the grass. Both magnetos were found loose in their clamps by technicians from an aircraft recovery firm who retrieved the wreckage. Logbook review disclosed that the engine had accumulated 67 hours since a major overhaul, which was accomplished May 1, 1997. This was the last maintenance recorded in the logbooks.
Factual narrative
On March 10, 1998, at 0900 hours Pacific standard time, an Aeronca 7AC, N1659E, collided with bushes and other obstacles during an off-airport forced landing near Lone Pine, California. The forced landing was precipitated by a loss of power as the aircraft was climbing to cruise altitude. The aircraft was owned and operated by the pilot and was on a personal cross-country flight. Visual meteorological conditions prevailed and no flight plan was filed. The aircraft incurred substantial damage. Neither the pilot nor the one passenger onboard were injured. The flight originated from the Lone Pine airport at 0830 as a cross-country flight to Fresno, California.
The pilot reported in his written statement that as the aircraft climbed through about 3,000 feet agl the engine began to misfire, then lost almost all power. Following an unsuccessful attempt to restore normal engine power, the pilot set up for a glide toward an abandoned airfield. With insufficient altitude to make the airfield, the pilot landed in a pasture and collided with bushes and hidden obstacles in the grass.
Both magnetos were found loose in their clamps by technicians from an aircraft recovery firm who retrieved the wreckage. Logbook review disclosed that the engine had accumulated 67 hours since a major overhaul, which was accomplished May 1, 1997. This was the last maintenance recorded in the logbooks.
Aircraft
- Registration
- N1659E
- Reported as
- Aeronca 7AC
- Category
- Airplane
- Serial number
- 5225
- Engine
- Continental C-90-8F, 90 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Peter A. Polin
- Registered owner
- Devil Dusters, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · May 1, 1997 · 67 hours before
- Departed
- O26
- Destination
- FCH · Fresno, CA
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 40
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--no waivers/lim.
- Seat
- Front
- Flight hours
- 350 total · 85 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 55 °F, dew point 16 °F
- Altimeter
- 30.00 inHg
- Observed at
- BIH, 46 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.
Other investigations on N1659E · 1
Matched to the same aircraft by N-number and date.