- Date
- October 4, 1989, 17:10 local (22:10 UTC)
- Place
- Oklahoma City, OK
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N15JZZimmerman Moni Motorglider
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 22, 1992
- Report
- Approved by Office Director
- Case key
- 22950
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
Power loss due to the deteriorated muffler baffle which was not discovered in the recent annual inspection. A factor was the pilot's failure to properly analyze and correct for the headwind.
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.
Loss of engine power(total) - mech failure/malf
Exhaust system,muffler - deterioratedCause
Maintenance,annual inspection - improperCause
Exhaust system,muffler - blocked(partial)
Compensation for wind conditions - improperFactor
Forced landing
In flight collision with terrain/water
Aircraft
- Registration
- N15JZ
- Reported as
- Zimmerman Moni Motorglider (MONI MOTOR)
- Category
- Airplane, amateur-built
- Serial number
- 333T
- Airframe hours
- 81
- Engine
- KFM 107E MAXI, 30 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Registered owner
- Daniel R. Stroud
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · August 29, 1989 · 8 hours before
- Departed
- HSD · Oklahoma City, OK
- Airport
- HSD · Sun Dance, runway 17, 5,000 × 50 ft, concrete
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 36
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Center
- Flight hours
- 2,041 total · 10 in this make and model · 1,873 as pilot in command · 34 in the last 90 days · 16 in the last 30 days
Weather
- Conditions
- Visual (VMC) · Day
- Lowest ceiling
- None