- Date
- August 28, 1992, 15:20 local (22:20 UTC)
- Place
- Temecula, CA
- Injuries
- 2 minor
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N211AFCessna 150M
- Weather
- Visual (VMC) · Day
- Status
- Completed · report September 14, 1993
- Report
- Approved by Office Director
- FAA report
- 19920828034069A
- Case key
- 27747
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 shutdown of the engine due to the failure of the muffler and the resulting heat induced shorting of the magneto ground wires, and the inadequate maintenance inspection of the muffler and the engine exhaust system.
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 instructor pilot said that during climb to cruise the engine suddenly quit completely with a loud noise. The instructor landed the aircraft in a field and the aircraft nosed over after colliding with a berm. Examination of the aircraft revealed that the rear dome of the left muffler had blown out. Scorching and exhaust stains were evident on the firewall to the rear of the muffler and wire bundles routed in this area were found burned with melted insulation noted. The 'p' leads for the magnetos were found routed in this wire bundle. Visual examination and electrical continuity checks of the 'p' leads revealed that the internal insulation had melted allowing the conductors to short within the wires. Examination of the muffler revealed severe internal erosion, with holes through the cabin heat shroud. The failed end of the muffler was found to be severely eroded around the failure point on the end piece, with small holes and external discoloration noted.
Aircraft
- Registration
- N211AF
- Reported as
- Cessna 150M
- Category
- Airplane
- Serial number
- 15076287
- Airframe hours
- 12,024
- Engine
- Continental O-200-A48B, 100 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Armed Forces Flying Club
- Registered owner
- Armed Forces Flying Club
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · July 28, 1992 · 87 hours before
- Departed
- F70
- Destination
- MYF · San Diego, CA
- Flight plan
- VFR
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
- 33
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Multi-engine land, Single-engine land
- Instrument ratings
- Airplane, Helicopter
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Right
- Flight hours
- 1,360 total · 170 in this make and model · 950 as pilot in command · 158 in the last 90 days · 22 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 15 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 97 °F, dew point 55 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.