# NTSB LAX82FUJ44: Hallquist Thunderbolt, N125GH, Mesa, AZ, July 25, 1982

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: July 25, 1982, 07:45 local (14:45 UTC)
- Place: Mesa, AZ
- Coordinates: 33.380474, -111.869529 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=33.3805&lon=-111.8695&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report July 25, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 71669
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX82FUJ44
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/71669/pdf
- Page: https://openairdocs.org/ntsb/LAX82FUJ44

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - downwind
  - aircraft performance,turn capability - exceeded (cause)
  - flight controls - improper use of, pilot in command (cause)
  - airspeed - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command
- In flight collision with object, approach - vfr pattern - final approach
  - object - tree(s) (contributing factor)

## Analysis

FORMATION FLIGHT CAME OVER THE RWY UPWIND AT 2,000 FT MSL. PLT WAS CLEARED #2 TO LAND, PEELED OFF & STALLED DURING LEFT TURN TO DOWNWIND. THE PLT RECOVERED ABOUT 100 FT AGL BUT COLLIDED WITH A TALL TREE.

## Aircraft

- Registration: N125GH (not matched to a registry record)
- Reported make and model: HALLQUIST THUNDERBOLT (THUNDERBOL)
- Category: Airplane, amateur-built
- Serial number: 13
- Airframe hours: 236
- Engines: LYCOMING O-320-C2C 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Y. L. Hallquist
- Registered owner: Y. L. Hallquist
- Departed: MESA, AZ
- Destination: MESA, AZ
- Airport: Falcon Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 59; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; flight hours: 2,146 total, 236 in this make and model, 1,874 as pilot in command, 33 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 5 knots
- Visibility: 30 statute miles
- Lowest ceiling: 6,000 ft broken
- Temperature: 172 °F
- Altimeter: 30.00 inHg

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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