# NTSB ATL82IA042: Beech B200, N1851S, Atlanta, GA, January 29, 1982

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: January 29, 1982, 09:00 local (14:00 UTC)
- Place: Atlanta, GA
- Location: 33.7490° N, 84.3880° W: Placed by OpenAirDocs: center of Atlanta, GA, within about 7 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=33.7490&lon=-84.3880&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report January 29, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 69830
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL82IA042
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/69830/pdf
- Page: https://openairdocs.org/ntsb/ATL82IA042

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - engine assembly,bearing - failure,total (cause)
  - propeller feathering - intentional, pilot in command
  - precautionary landing - performed, pilot in command

## Analysis

WHILE AT CRUISE WITH RECOMMENDED POWER SETTINGS, THE LEFT ENGINE OIL PRESSURE AND TORQUE INDICATIONS BEGAN FLUCTUATING AND DROPPING. AS THE POWER LEVER WAS RETARDED A POPPING SOUND WAS HEARD AND THE ENGINE WAS SHUT DOWN. A PRECAUTIONARY LANDING WAS MADE IN ATLANTA. ENGINE DISASSEMBLY DISCLOSED A FAILURE OF THE NO. 1 BEARING. BLADE TIP FEATHERING WAS NOTED ON THE FIRST AND SECOND STAGE COMPRESSOR BLADE TIPS, AS WELL AS ON THE IMPELLER STAGE. THE OIL NOZZLE WAS UNOBSTRUCTED. PRATT AND WHITNEY HAD OBTAINED A NEW VENDOR FOR THE BEARING, WHICH HAD 113 HOURS IN SERVICE AT THE TIME OF THE FAILURE.

## Aircraft

- Registration: N1851S (not matched to a registry record)
- Reported make and model: BEECH B200
- Category: Airplane
- Serial number: BB 962
- Airframe hours: 113
- Engines: P & W PT6-42 850 horsepower turbo prop
- Damage: No damage
- Flight: Executive/Corporate, Part 91
- Operator: Herbert Const. Co.
- Registered owner: Herbert Const. Co.
- Departed: BIRMINGHAM, AL
- Destination: GREENSBORO, NC
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; airline transport; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 1,700 in this make and model, 7,000 as pilot in command, 110 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Temperature: -4 °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 (OpenAirDocs).

- [Incident 19820129012599I](https://openairdocs.org/incident/19820129012599I), Jan 29, 1982: Beech 200BEECH, Atlanta, GA. Engine problem enroute, number one bearing failure in compressor section. Service bulletin issue recommended.

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.

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