# NTSB ATL85LA142: Cessna 150, N4483U, Alma, GA, April 19, 1985

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 19, 1985, 17:15 local (22:15 UTC)
- Place: Alma, GA
- Coordinates: 31.539426, -82.469657 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.5394&lon=-82.4697&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6781
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL85LA142
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6781/pdf
- Page: https://openairdocs.org/ntsb/ATL85LA142

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(total) - mech failure/malf, takeoff - initial climb
  - engine assembly,piston - failure,total (cause)
  - maintenance,inspection - not performed, pilot in command (cause)
  - maintenance,lubrication - exceeded, pilot in command (cause)
  - operation with known deficiencies in equipment - exceeded, pilot in command (cause)
- Forced landing, landing - flare/touchdown
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - ground
  - stall/mush - inadvertent, pilot in command (cause)
  - procedures/directives - not followed, pilot in command (cause)

## Analysis

THE STUDENT PILOT AND PASSENGER CHANGED THE ENGINE OIL JUST PRIOR TO ATTEMPTING THE TAKEOFF.  THE OIL WAS DRAINED ON THE GROUND ON THE AIRPORT WHERE THE AIRCRAFT WAS PARKED. EXAMINATION OF THE OIL, DISCLOSED THAT METAL SHAVINGS WERE PRESENT IN THE DRAINED OIL.  FURTHER EXAMINATION OF THE AIRCRAFT DISCLOSED THAT METAL SHAVINGS WERE ALSO PRESENT INSIDE THE ENGINE WHEN IT WAS DISASSEMBLED.  THE EXAMINATION ALSO FOUND RUST IN THE CYLINDER WALLS ALONG WITH THE FRACTURED RINGS FROM NUMBERS 2 AND 3 PISTONS. THE ANNUAL INSPECTION OR RECENT MAINTENANCE DATA WAS NOT DETERMINED.

## Aircraft

- Registration: [N4483U](https://openairdocs.org/deregistered/N4483U-2012-06-07), registration cancelled 2012-06-07, S/N 15060483, built 1964 (OpenAirDocs)
- Reported make and model: CESSNA 150
- Registry model: [Cessna 150D](https://openairdocs.org/model/cessna-150d) (registry code 2071810) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 150-60483
- Airframe hours: 3276
- Engines: CONTINENTAL O-200 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Bobby White
- Airworthiness certificate: Standard, Normal
- Airport: Alma, runway 33, 5,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; student; medical: class 3, unknown; seat: left; flight hours: 57 total, 57 in this make and model, 40 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 110° at 7 knots
- Visibility: 12 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 52 °F
- Altimeter: 30.00 inHg
- Observed at: AMG

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19850419013669A](https://openairdocs.org/incident/19850419013669A), Apr 19, 1985: Cessna 150D, Alma, GA, Destroyed. Engine quit after liftoff. Metal in engine from broken rings and pistons. Numerous maintenance discrepancies.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.