- Date
- April 8, 2005, 09:20 local (13:20 UTC)
- Place
- Ann Arbor, MI
- Injuries
- 2 uninjured
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N777UMCessna 172P
- Weather
- Visual (VMC) · Day
- Status
- Completed · report July 7, 2005
- Report
- Approved by Office Director
- FAA report
- 20050408006929A
- Case key
- 61428
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 the carburetor nozzle resulting in loss of engine power and the unsuitable terrain encountered during the forced landing. A factor was the low altitude.
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 airplane was damaged during a forced landing following a loss of engine power during a go-around. Engine runs subsequent to the accident revealed that the engine would run rough when advanced to 1,400 rpm. The engine operated throughout it's operational rpm range when fitted with a carburetor from another airplane. The accident carburetor was found to be missing the accelerator pump nozzle tube. No other discrepancies were noted.
Factual narrative
On April 8, 2005, about 0920 eastern daylight time, a Cessna 172P, N777UM, piloted by a student pilot and certified flight instructor (CFI), was substantially damaged during a forced landing following a loss of engine power during an attempted go-around from runway 06 (3,500 feet by 75 feet, concrete), at the Ann Arbor Municipal Airport, Ann Arbor, Michigan. The 14 CFR Part 91 training flight was operating in visual meteorological conditions without a flight plan. Neither the CFI nor student were injured. The local flight originated about 0755.
The CFI stated that a go-around was executed due to excessive speed during the landing approach. He stated that upon throttle advancement, the engine lost power resulting in the forced landing.
A postaccident examination of the airplane was conducted. Engine runs subsequent to the accident revealed that the engine would run rough when advanced to 1,400 rpm. A carburetor from another Cessna 172 was mounted on the accident airplane. With this carburetor, the engine was able to be advanced to 2,700 rpm and the engine operation throughout the rpm range was normal. Examination of the accident carburetor revealed that the accelerator pump nozzle tube was missing. No other discrepancies were noted.
Aircraft
- Registration
- N777UM
- Reported as
- Cessna 172P
- Category
- Airplane
- Serial number
- 17275405
- Engine
- Textron Lycoming O-320, 160 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Instructional · Part 91
- Registered owner
- University Michigan Flyers
- Airworthiness certificate
- Standard, Normal
- Departed
- ARB · Ann Arbor, MI
- Destination
- Ann Arbor, MI
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
- Flight instructor
- Age
- 28
- Injuries
- None
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Single-engine land, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Valid Medical--w/ waivers/lim
- Flight hours
- 2,800 total · 1,572 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.