# NTSB ATL83LA326: Grumman G-164A, N7904, Hatley, GA, August 15, 1983

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: August 15, 1983, 14:00 local (18:00 UTC)
- Place: Hatley, GA
- Coordinates: 31.960487, -83.76918 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.9605&lon=-83.7692&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): 6168
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL83LA326
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6168/pdf
- Page: https://openairdocs.org/ntsb/ATL83LA326

## 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
  - exhaust system,stack - disconnected (cause)
- Roll over, landing - roll

## Analysis

THE PILOT REPORTED THAT WHILE SPRAYING A COTTON FIELD AT APRX 60 FEET AGL WHEN THE ENGINE MADE A POPPING SOUND AND THEN LOST POWER. THE PILOT LANDED IN A COTTON FIELD WHERE THE AIRCRAFT ROLLED OVER ON ITS BACK AND WAS DESTROYED BY THE POST IMPACT FIRE. SUBSEQUENT EXAMINATION OF THE ENGINE REVEALED: SCORING OF THE 5# CYLINDER, NO OIL IN THE CASE OR EVIDENCE OF OIL RESIDUE; EXHAUST STACK WEAR THE #2 AND #3 CYLINDERS WAS DAMAGED BY EXCESSIVE HEAT. THE EXHAUST STACK APPEARS TO HAVE WORKED LOOSE IN FLIGHT CAUSING EXCESSIVE HEAT TO BE DIRECTED TOWARD THE #2, 3 AND 4 CYLINDER HEADS TO MELT OFF.

## Aircraft

- Registration: [N7904](https://openairdocs.org/deregistered/N7904-2017-02-04), registration cancelled 2017-02-04, S/N 810, built 1971 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman G-164A](https://openairdocs.org/model/grumman-g-164a) (registry code 3952704) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 810
- Airframe hours: 4728
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Mcbryant Flying Service
- Registered owner: M&W Flying Service
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, July 30, 1983, 15 hours before
- Departed: HALEY AIRSTRIP

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 2,473 total, 2,128 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 45° at 10 knots
- Visibility: 15 statute miles
- Lowest ceiling: none
- Temperature: 90 °F

## 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 19830815041769A](https://openairdocs.org/incident/19830815041769A), Aug 15, 1983: Scwzer G164A, Hatley, GA, Destroyed. Engine quit on spray run. Flipped over and burned on landing. Exhaust stack separated overheated cylinders.

## Other investigations on N7904 (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 MIA76FKG88](https://openairdocs.org/ntsb/MIA76FKG88), Jul 15, 1976: Grumman G-164A (N7904), Hatley, 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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