# NTSB ATL85LKG04: Aero Commander S2R, N8834Q, Leslie, GA, April 10, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: April 10, 1985, 18:00 local (23:00 UTC)
- Place: Leslie, GA
- Coordinates: 31.950969, -84.080863 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.9510&lon=-84.0809&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6881
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL85LKG04
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6881/pdf
- Page: https://openairdocs.org/ntsb/ATL85LKG04

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, cruise - normal
  - exhaust system,external supercharger - chafed (cause)
  - maintenance,inspection - inadequate, other maintenance personnel (cause)
  - exhaust system,external supercharger - binding(mechanical) (cause)
  - exhaust system,external supercharger - failure,total (cause)
- Forced landing, descent - emergency
- In flight collision with object, landing - flare/touchdown
  - object - tree(s)

## Analysis

THE ACFT LOST POWER EN ROUTE TO SPRAY CROPS & CRASH LANDED IN A WOODED AREA. THE ACFT HAD FLOWN ONLY 2 MILES WHEN THE POWER LOSS OCCURRED. DURING THE POST ACCIDENT INVESTIGATION AN EXAM OF THE POWERPLANT & SYSTEMS REVEALED THAT THE SUPERCHARGER HAD A LOOSE IMPELLER SHAFT AND THAT THE IMPELLER HAD CONTACTED THE HOUSING (CASE). THE IMPELLER CASE HAD LOST METAL IN THE CONTACT AREA AND THE IMPELLER OUTSIDE DIAMETER WAS REDUCED BY APRX 1/4 INCH. THE SUPERCHARGERSHAFT BEARING WERE WORN & LOOSE WHICH ALLOWED THE SHAFT TO MAKE CONTACT WITH ITS HOUSING. AN A M OR D REPORT WAS SUBMITTED BY RUSSELL ACFT TO THE FAA.

## Aircraft

- Registration: [N8834Q](https://openairdocs.org/deregistered/N8834Q-2013-05-15), registration cancelled 2013-05-15, S/N 1534R, built 1970 (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: 1534R
- Airframe hours: 5500
- Engines: P&W R1340 600 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Registered owner: Coney Ag Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: 100 hour, December 2, 1984, 10 hours before

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 7,015 total, 550 in this make and model, 7,000 as pilot in command, 15 in the last 90 days, 15 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 235° at 5 knots
- Visibility: 10 statute miles
- Temperature: 64 °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 19850410012339A](https://openairdocs.org/incident/19850410012339A), Apr 10, 1985: Ayres S2RRESTD, Leslie, GA, Substantial damage. Supercharger impeller shaft bearing worn. Impeller hit housing, failed supercharger. Lost power, landed in woods.

## Other investigations on N8834Q (1)

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.

- [NTSB MIA77FKG79](https://openairdocs.org/ntsb/MIA77FKG79), Sep 12, 1977: Aero Comdr S2R (N8834Q), Cordele, GA, substantial damage

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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