# NTSB FTW93LA070: Boeing A75N1, N56221, San Antonio, TX, January 16, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 16, 1993, 14:48 local (20:48 UTC)
- Place: San Antonio, TX
- Coordinates: 29.490613, -98.459304 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=29.4906&lon=-98.4593&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 25, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18687
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW93LA070
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18687/pdf
- Page: https://openairdocs.org/ntsb/FTW93LA070

## Probable cause

THE FAILURE OF THE PILOT TO MAINTAIN DIRECTIONAL CONTROL DURING THE LANDING ROLL

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command
- On ground/water encounter with terrain/water, landing - roll

## Analysis

FOLLOWING A SERIES OF TOUCH AND GO LANDINGS THE PILOT LOST DIRECTIONAL CONTROL ON THE LAST LANDING. DURING THE LANDING ROLL THE AIRPLANE SWERVED AND GROUND LOOPED, DAMAGING THE RIGHT WING AND RIGHT MAIN LANDING GEAR

## Factual narrative

On January 16, 1993, at 1448 central standard time, a Boeing A75N1, N56221, was substantially damaged during landing at Stinson Airport, San Antonio, Texas. The pilot was not injured. Weather for the 14 CFR part 91 flight was visual meteorological conditions. W. M. Parker of Seguin, Texas, was the registered owner and operator.

During interviews with the pilot conducted by a Federal Aviation Administration inspector and in a written report, the pilot stated that he was practicing touch and go landings. He further reported that during the last landing he lost directional control and the airplane ground looped, damaging the right main landing gear and right wing.

## Aircraft

- Registration: [N56221](https://openairdocs.org/aircraft/N56221), registered now, S/N 75-3195, built 1942 (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: [Lycoming R680-13](https://openairdocs.org/engine/lycoming-r680-13) (registry code 42408, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-3195
- Airframe hours: 3713
- Engines: LYCOMING R680-9 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Excalibur Aviation Company
- Registered owner: Excalibur Aviation Company
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 9, 1992, 26 hours before
- Departed: SSF
- Destination: SSF
- Airport: SSF, Stinson Field, runway 14, 4,129 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; commercial; airplane ratings: single-engine land, multi-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: rear; flight hours: 3,685 total, 42 in this make and model, 2,681 as pilot in command, 8 in the last 90 days, 6 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 5 knots, gusting 10
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 64 °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 19930116000419A](https://openairdocs.org/incident/19930116000419A), Jan 16, 1993: Boeing A75N1, San Antonio, TX, Substantial damage. Lost control on landing roll. Ground looped.

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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