# NTSB FTW90LA130: Boeing A75N1, N66302, San Antonio, TX, July 2, 1990

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 2, 1990, 18:45 local (23:45 UTC)
- Place: San Antonio, TX
- Coordinates: 29.589605, -98.469604 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.5896&lon=-98.4696&mi=10
- Phase of flight: [Maneuvering](https://openairdocs.org/ntsb-phases/450) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report September 15, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 23149
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90LA130
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23149/pdf
- Page: https://openairdocs.org/ntsb/FTW90LA130

## Probable cause

PILOT'S FAILURE TO MAINTAIN ADEQUATE SPEED. CONTRIBUTING TO THE ACCIDENT WAS THE MOMENTARY POWER LOSS.

## Sequence of events

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

- Loss of engine power(partial) - nonmechanical, maneuvering
  - reason for occurrence undetermined
- Loss of control - in flight, maneuvering
  - airspeed(vs) - not maintained, pilot in command (cause)
  - stall - inadvertent, pilot in command (contributing factor)
- In flight collision with object, descent - uncontrolled
  - object - tree(s) (contributing factor)

## Analysis

THE PILOT MADE A PASS OVER THE RUNWAY, THEN MADE A RIGHT PULL-UP AND REVERSED DIRECTION TO LAND BACK ON THE RUNWAY. HE SAID THE ENGINE LOST POWER MOMENTARILY IN A CLIMBING TURN AND THE AIRPLANE STALLED. THE AIRPLANE IMPACTED A TREE AND THEN THE GROUND. A PARTIAL ENGINE TEARDOWN DID NOT REVEAL ANY MECHANICAL PROBLEMS AND THE PILOT LATER ACKNOWLEDGED THAT THE MOMENTARY POWER LOSS COULD HAVE BEEN PILOT INDUCED.

## Aircraft

- Registration: [N66302](https://openairdocs.org/aircraft/N66302), registered now, S/N 758185 (OpenAirDocs)
- Reported make and model: BOEING A75N1
- Registry model: [Boeing A75N1(PT17)](https://openairdocs.org/model/boeing-a75n1-pt17) (registry code 1380134) (OpenAirDocs)
- Registry engine: [Continental W670 series](https://openairdocs.org/engine/continental-w670-series) (registry code 17018, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 78-8185
- Engines: CONTINENTAL W670-6N 220 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Scott H. Seaman
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 1, 1989, 57 hours before
- Departed: T94
- Airport: T94, Twin Oaks, runway 30, 1,800 × 30 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: rear; flight hours: 593 total, 280 in this make and model, 522 as pilot in command, 70 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 99 °F, dew point -0 °F
- Altimeter: 30.00 inHg

## 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 19900702023489A](https://openairdocs.org/incident/19900702023489A), Jul 2, 1990: Boeing A75N1, San Antonio, TX, Substantial damage. Low pass over runway pulled up. Made wing over to land opposite. Engine failed respond. Hit trees. No engine defect

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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