# NTSB MIA84LA060: Grumman AG-CAT, N6736Q, Homestead, FL, January 16, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: January 16, 1984, 10:15 local (15:15 UTC)
- Place: Homestead, FL
- Coordinates: 25.479005, -80.410583 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=25.4790&lon=-80.4106&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31073
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA84LA060
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31073/pdf
- Page: https://openairdocs.org/ntsb/MIA84LA060

## 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, maneuvering - aerial application
  - engine assembly,cylinder - failure,total (cause)
  - engine assembly,cylinder - fatigue (cause)
- Forced landing, landing - flare/touchdown

## Analysis

THE ACFT CRASHED DURING A FORCED LANDING AFTER THE ENGINE LOST POWER. INVESTIGATION REVEALED THAT THAT # 8 CYLINDER FAILED. THE ORIGINAL CRACKING WAS DETERMINED TO BE FROM FATIGUE.

## Aircraft

- Registration: [N6736Q](https://openairdocs.org/deregistered/N6736Q-2013-08-05), registration cancelled 2013-08-05, S/N 250B, built 1977 (OpenAirDocs)
- Reported make and model: GRUMMAN AG-CAT
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164B](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164b) (registry code 3952802) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Engines: P&W R-985 SERIES 450 horsepower reciprocating
- Damage: Destroyed
- Flight: Aerial application, Part 137
- Registered owner: Tri-State Dusting
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, July 1, 1983, 345 hours before
- Departed: 3X5, HOMESTEAD, FL

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: center

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 4 knots
- Visibility: 4 statute miles
- Lowest ceiling: 1,500 ft
- Temperature: 64 °F, dew point 64 °F
- Altimeter: 30.00 inHg
- Observed at: MIA, 15 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 19840116001779A](https://openairdocs.org/incident/19840116001779A), Jan 16, 1984: Scwzer G164B, Homestead, FL, Destroyed. Collided with the ground after engine failure. NR8 cylinder failed from fatigue cracking near the valve end.

## Other investigations on N6736Q (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 ATL99LA133](https://openairdocs.org/ntsb/ATL99LA133), Sep 19, 1999: Grumman-Schweizer G-164B (N6736Q), Enterprise, AL, destroyed. Probable cause: The loss of engine power for undetermined reasons. Contributing to the severity of the accident was the in-flight collision with a tree during the forced landing.

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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