# NTSB ANC82DA057: Britten-Norman BN-2A, N39MN, Nome, AK, July 2, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: July 2, 1982, 08:40 local (12:40 UTC)
- Place: Nome, AK
- Coordinates: 64.709587, -164.620162 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=64.7096&lon=-164.6202&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report July 2, 1983
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 72023
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC82DA057
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/72023/pdf
- Page: https://openairdocs.org/ntsb/ANC82DA057

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - roll/run
  - propeller system/accessories,blade - foreign object damage (cause)
  - propeller system/accessories,blade - fatigue (cause)
  - propeller system/accessories,blade - separation (cause)
  - aborted takeoff - performed, pilot in command

## Analysis

DURING THE TAKEOFF ROLL, A PROPELLER BLADE TIP FAILURE OCCURRED ON THE LEFT ENGINE. ABOUT 9 INCHES OF THE BLADE TIP SEPARATED AND ENTERED THE TOP SIDE OF THE FUSELAGE ABOUT 1 FT BEHIND THE PILOT'S HEAD. THE BLADE TIP SEVERED THE THROTTLE, FUEL MIXTURE, CARBURETOR HEAT AND PROPELLER CONTROL CABLES TO THE LEFT ENGINE. ALSO, THE AILERON CABLE BECAME JAMMED IN THE FULL LEFT POSITION AND THE RIGHT ENGINE CABLES WERE DAMAGED. REPORTEDLY, THE LEFT ENGINE WENT TO IDLE POWER AND THE PILOT HAD TO SWITCH THE MAGNETOS OFF IN ORDER TO ABORT THE TAKEOFF. A METALLURGICAL EXAMINATION REVEALED THAT THE PROPELLER BLADE (HARTZELL MODEL: HC-C1YK-2CUF, PN FC8477A-4) HAD FAILED FROM FATIGUE. THE FATIGUE CRACK ORIGINATED AT A DENT IN THE LEADING EDGE OF THE PROPELLER.

## Aircraft

- Registration: [N39MN](https://openairdocs.org/deregistered/N39MN-1991-04-17), registration cancelled 1991-04-17, S/N 566 (OpenAirDocs)
- Reported make and model: BRITTEN-NORMAN BN-2A
- Registry model: [Britten-Norman BN-2A-8](https://openairdocs.org/model/britten-norman-bn-2a-8) (registry code 1520209) (OpenAirDocs)
- Category: Airplane
- Serial number: C-566
- Airframe hours: 5217
- Engines: LYCOMING O-540-E4C5 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Munz Northern Airlines, Inc.
- Registered owner: Munz Northern Airlines, Inc.
- Departed: OME, NOME, AK
- Destination: ELI, ELIM, AK
- Flight plan: VFR
- Airport: OME, Nome, runway 27, 6,001 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; commercial, airline transport; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 5,900 total, 593 in this make and model, 5,741 as pilot in command, 328 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 6 knots
- Visibility: 20 statute miles
- Temperature: 127 °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).

- [Accident 19820702067369A](https://openairdocs.org/incident/19820702067369A), Jul 2, 1982: Bnorm BN2A8, Nome, AK, Substantial damage. Prop blade broke off and entered fuselage during takeoff run. Hartzell pn e 94200.

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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