# NTSB FTW91DRG03: Grumman G-164A, N7445, Weslaco, TX, June 8, 1991

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: June 8, 1991, 11:30 local (16:30 UTC)
- Place: Weslaco, TX
- Coordinates: 26.159362, -97.980636 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=26.1594&lon=-97.9806&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report March 31, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 23230
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW91DRG03
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23230/pdf
- Page: https://openairdocs.org/ntsb/FTW91DRG03

## Probable cause

FAILURE OF THE PILOT TO MAINTAIN CLEARANCE.

## Sequence of events

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

- In flight collision with object, maneuvering - aerial application
  - object - wire,transmission
  - clearance - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled
- Fire, other

## Analysis

DURING A DAY AGRICULTURE SPRAYING THE PILOT IMPACTED ELECTRICAL TRANSMISSION WIRES.  FOLLOWING THE WIRE STRIKE THE AIRPLANE DESCENDED UNCONTROLLABLY AND IMPACTED THE GROUND. FOLLOWING GROUND IMPACT THE AIRPLANE WAS CONSUMED BY FIRE.

## Aircraft

- Registration: [N7445](https://openairdocs.org/deregistered/N7445-2013-05-08), registration cancelled 2013-05-08, S/N 951, built 1972 (OpenAirDocs)
- Reported make and model: GRUMMAN G-164A
- Registry model: [Grumman Acft ENG Cor-Schweizer G-164A](https://openairdocs.org/model/grumman-acft-eng-cor-schweizer-g-164a) (registry code 3952801) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 951
- Engines: P&W R-1340 600 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Aerial application, Part 137
- Operator: Dewey M. Mark
- Registered owner: Weslaco Aviation, Inc.
- Airworthiness certificate: Special, Restricted (Special)

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 68; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: center; flight hours: 27,550 total, 20 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 290° at 6 knots
- Visibility: 7 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: 84 °F, dew point 66 °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 19910608020569A](https://openairdocs.org/incident/19910608020569A), Jun 8, 1991: Scwzer G164A, Weslaco, TX, Destroyed. Struck power lines during spraying. Crashed out of control. Burned.

## Other investigations on N7445 (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 OAK74FVG22](https://openairdocs.org/ntsb/OAK74FVG22), Jan 30, 1974: Grumman G-164 (N7445), Zamora, CA, 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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.