# NTSB FTW85LA002: Grumman G-164A, N5255, Progreso, TX, October 1, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 1, 1984, 16:30 local (21:30 UTC)
- Place: Progreso, TX
- Coordinates: 26.090715, -97.960678 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.0907&lon=-97.9607&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21595
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW85LA002
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21595/pdf
- Page: https://openairdocs.org/ntsb/FTW85LA002

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, takeoff - initial climb
  - reason for occurrence undetermined (cause)
- Forced landing, descent - emergency
  - load jettison - not performed, pilot in command (contributing factor)
- Nose over, landing - roll
  - terrain condition - crop (contributing factor)

## Analysis

SHORTLY AFTER TAKEOFF, PLT HEARD EXPLOSIVE REPORT FROM ENGINE AND EXPERIENCED PARTIAL PWR LOSS. PLT ATTEMPTED TO RETURN FOR LANDING BUT COULD NOT MAINTAIN SUFFICIENT ALTITUDE. LOAD NOT JETTISONED. DURING FORCED LANDING ROLL OUT IN CANE FIELD ACFT NOSED OVER. ENGINE TEARDOWN TO DETERMINE REASON FOR PWR LOSS WAS NOT PERFORMED.

## Aircraft

- Registration: [N5255](https://openairdocs.org/deregistered/N5255-2012-12-11), registration cancelled 2012-12-11, S/N 539, built 1968 (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 R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 339
- Airframe hours: 6621
- Engines: P&W R-1340AN1 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Aerial application, Part 137
- Registered owner: Sam Muse
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Annual, February 23, 1984

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--no waivers/lim.; seat: front; flight hours: 2,490 total, 2,490 in this make and model, 2,417 as pilot in command, 238 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 45° at 6 knots, gusting 8
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 81 °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 19841001052819A](https://openairdocs.org/incident/19841001052819A), Oct 1, 1984: Scwzer G164A, Progresso, TX, Substantial damage. Loud bang, rough running engine, partial power loss. Landed in cane field, flipped over on back.

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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