# NTSB MKC84LA228: Aero Commander Thrush S2R, N9063Q, Waldenberg, AR, July 20, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 20, 1984, 02:00 local (07:00 UTC)
- Place: Waldenberg, AR
- Coordinates: 36.260261, -90.960998 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.2603&lon=-90.9610&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33754
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84LA228
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33754/pdf
- Page: https://openairdocs.org/ntsb/MKC84LA228

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

## Analysis

WHILE ON TAKEOFF ROLL ONE PROPELLER BLADE SEPARATED AND THE ENGINE CAME LOOSE FROM THE ENGINE MOUNTS. THE ACFT WAS THEN STOPPED ON THE RWY.

## Aircraft

- Registration: N9063Q (not matched to a registry record)
- Reported make and model: AERO COMMANDER THRUSH S2R
- Category: Airplane
- Serial number: 1560R
- Airframe hours: 4170
- Engines: WRIGHT 1820-71 1200 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Wood Aviation
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, May 30, 1984, 170 hours before
- Departed: 8M2, WALDENBERG, AR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center; flight hours: 5,500 total, 5,440 in this make and model, 200 in the last 90 days, 100 in the last 30 days, 10 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 81 °F, dew point 61 °F
- Altimeter: 30.00 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 19840720034369A](https://openairdocs.org/incident/19840720034369A), Jul 20, 1984: Ayres S2RRESTD, Waldenberg, AR, Substantial damage. Prop blade failed during takeoff run. Pn RN584301 hamilton standard. Vibration broke engine mounts.

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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