# NTSB MKC89LA150: Aero Commander S2R, N8976Q, Jonesboro, AR, July 3, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 3, 1989, 14:30 local (19:30 UTC)
- Place: Jonesboro, AR
- Coordinates: 35.820976, -90.679672 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.8210&lon=-90.6797&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 24, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 34824
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC89LA150
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/34824/pdf
- Page: https://openairdocs.org/ntsb/MKC89LA150

## Probable cause

THE PILOT'S ENCOUNTER WITH UNSUITABLE TERRAIN DURING A FORCED LANDING MADE NECESSARY BY THE SEPARATION OF THREE FEET OF ONE OF THE PROPELLER BLADES.

## Sequence of events

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

- Airframe/component/system failure/malfunction, maneuvering - aerial application
  - propeller system/accessories,blade - separation (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - unsuitable terrain or takeoff/landing/taxi area (cause)

## Analysis

THE PILOT STATED THAT, WHILE PERFORMING AN AERIAL APPLICATION OPERATION, THE ACFT BEGAN TO VIBRATE AND SHAKE VIOLENTLY. AN EMERGENCY LDG WAS ATTEMPTED THAT RESULTED IN SUBSTANTIAL DAMAGE AND FIRE. POST ACCIDENT INVESTIGATION REVEALED ABOUT 3 FEET OF ONE PROPELLER BLADE TO BE MISSING.

## Aircraft

- Registration: [N8976Q](https://openairdocs.org/aircraft/N8976Q), registered now, S/N 1646R, built 1972 (OpenAirDocs)
- Reported make and model: AERO COMMANDER S2R
- Registry model: [Aero Commander S2R](https://openairdocs.org/model/aero-commander-s2r) (registry code 0143022) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1646R
- Engines: P&W R-1340-AN1 600 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Haggenmacher, Scott
- Registered owner: Haggenmacher, Scott
- Airworthiness certificate: Special, Restricted (Special)
- Departed: JONESBORO, AR
- Airport: NONE

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 5,000 total

## Weather

- Conditions: Visual (VMC), Day
- Wind: 350° at 7 knots
- Visibility: 12 statute miles
- Lowest ceiling: 25,000 ft broken
- Temperature: 88 °F, dew point 72 °F
- Altimeter: 29.00 inHg
- Observed at: JBR, 8 nm away

## 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 19890703019609A](https://openairdocs.org/incident/19890703019609A), Jul 3, 1989: Ayres S2RR1340REST, Jonesboro, AR, Destroyed. Three feet of a propeller blade separated in flight causing severe vibration. Crash landed. Aircraft burned.

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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