- Date
- January 22, 1993, 13:55 local (21:55 UTC)
- Place
- Ramona, CA
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N7965GCessna 172L
- Weather
- Visual (VMC) · Day
- Status
- Completed · report October 25, 1993
- Report
- Approved by Office Director
- FAA report
- 19930122000799A
- Case key
- 27908
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
A loss of engine power related to inadequate and improper maintenance practices concerning the carburetor.
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
Both pilots said they were practicing power off forced landings. When the aircraft began to undershoot the runway the instructor increased the throttle but the engine did not respond. The aircraft collided with a berm short of the runway. The engine was examined with no abnormalities noted. The carburetor, however, had numerous discrepancies. The carburetor itself was the incorrect part for the engine and the jets were the incorrect ones for the carburetor. The float was incorrectly adjusted and the needle valve was worn. Incorrect screws were installed in the throttle butterfly valve and both the throttle shaft and its assoicated bushings were worn. The bowl to throttle body attachment screws were found loose. The history of the carburetor could not be determined from an examination of the aircraft maintenance records.
Aircraft
- Registration
- N7965G
- Reported as
- Cessna 172L
- Category
- Airplane
- Serial number
- 17259665
- Airframe hours
- 6,589
- Engine
- Lycoming O-320-E2D, 150 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Operator
- Coastal Flyers, Inc.
- Registered owner
- Coastal Flyers, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- Annual · December 8, 1992 · 32 hours before
- Departed
- SEE · San Diego, CA
- Destination
- SEE
- Airport
- L39 · Ramona, runway 27, 4,000 × 150 ft, asphalt
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
- 60
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Seat
- Right
- Flight hours
- 1,766 total · 350 in this make and model · 1,664 as pilot in command · 55 in the last 90 days · 22 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 270° at 12 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- None
- Temperature
- 70 °F
- Altimeter
- 29.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.