# NTSB ATL83FA008: Cessna 177RG, N45696, Montgomery, AL, October 9, 1982

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: October 9, 1982, 12:20 local (16:20 UTC)
- Place: Montgomery, AL
- Coordinates: 32.400451, -86.330535 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.4005&lon=-86.3305&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 9, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71757
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83FA008
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71757/pdf
- Page: https://openairdocs.org/ntsb/ATL83FA008

## 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 - fatigue (cause)
  - propeller system/accessories,blade - failure,total (cause)
  - propeller system/accessories,blade - separation (cause)

## Analysis

AFTER ADVANCING THE THROTTLE ABOUT 1/2 OF ITS TRAVEL TO COMMENCE THE TAKEOFF ROLL, THE PLT HEARD A LOUD EXPLOSION & FELT A VIOLENT SHAKING OF THE ACFT. THE ENG QUIT & THE ACFT SWERVED TO THE RIGHT SIDE OF THE RWY. POST CRASH EXAMINATIONREVEALED THAT ONE ENTIRE PROPELLER BLADE HAD BEEN THROWN FROM THE PROPELLER HUB. THE FATIGUE FAILURE ORIGINATED AT A LOCATION ACROSS THE HUB FROM THE OPEN AREA & PROPOGATED OVER APPROXIMATELY 80% OF THE SURFACE BEFORE BREAKING AWAY IN OVERLOAD. THE FATIGUE ORIGINATED FROM AN AREA OF A METAL DEFECT IN THE FORM OF OVERHEATED MELTED MATERIAL. A DISCOLORED IRREGULAR AREA EXISTED ALONG THE OUTER RADIUS OF THE ORIGIN AREA, & DETAILED EXAMINATION OF THIS AREA DISCLOSED SPHERICAL PORES & STRUCTURE INDICATIVE OF FUSED METAL. THE FATIGUE STRIATIONS EMANATED FROM THE BASE OF THE POROUS & FUSED ZONE. A SPECIFIC CAUSE OF THE DEFECT WAS NOT IDENTIFIED.

## Aircraft

- Registration: [N45696](https://openairdocs.org/deregistered/N45696-2012-11-14), registration cancelled 2012-11-14, S/N 177RG1127, built 1977 (OpenAirDocs)
- Reported make and model: CESSNA 177RG
- Registry model: [Cessna 177RG](https://openairdocs.org/model/cessna-177rg) (registry code 2073709) (OpenAirDocs)
- Registry engine: [Lycoming IO-360-A1B6D](https://openairdocs.org/engine/lycoming-io-360-a1b6d) (registry code 41593, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 177RG1127
- Airframe hours: 2081
- Engines: LYCOMING IO-360-A1B60 200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Harvey Monk
- Registered owner: Ross S. Brown
- Departed: MGM, MONTGOMERY, AL
- Destination: MGM, MONTGOMERY, AL
- Airport: MGM, Dannely Field, runway 21, 4,010 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 39; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; flight hours: 2,814 total, 17 in this make and model, 2,628 as pilot in command, 112 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 220° at 8 knots
- Visibility: 7 statute miles

## 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 19821009054339A](https://openairdocs.org/incident/19821009054339A), Oct 9, 1982: Cessna 177RG, Montgomery, AL, Substantial damage. Lost a propeller blade on initial takeoff run. Stopped on runway. Engine twisted in mounts. Fatigue failure.

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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