# NTSB FTW90DPA07: Ayres S2R, N8472V, Mcgregor, TX, June 15, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: June 15, 1990, 12:10 local (17:10 UTC)
- Place: Mcgregor, TX
- Coordinates: 31.539726, -97.199356 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.5397&lon=-97.1994&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 9, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 22933
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW90DPA07
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22933/pdf
- Page: https://openairdocs.org/ntsb/FTW90DPA07

## Probable cause

THE FUEL EXHAUSTION INDUCED POWER LOSS, WHICH RESULTED FROM THE PILOT'S INACCURATE FUEL CONSUMPTION CALCULATIONS.

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - fluid,fuel - exhaustion (cause)
  - fuel consumption calculations - inaccurate, pilot in command (contributing factor)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing - flare/touchdown
  - terrain condition - ditch

## Analysis

THE PILOT STATED THAT THE FUEL QUANTITY GAUGE WAS INOPERATIVE AND THAT HE INTENDED TO REFUEL EVERY HOUR AND 45 MINUTES. HE HAD FLOWN FOR TWO HOURS WITHOUT REFUELING ON THE PRECEDING DAY. AT 1,500 FEET THE POWER LOSS OCCURRED. DURING THE FORCED LANDING THE PILOT REALIZED THAT HIS CHOSEN SITE HAD UNEVEN TERRAIN AND DITCHES. HE WAS TRYING TO FLY THE AIRPLANE ACROSS A DITCH WHEN THE TAIL STRUCK THE EMBANKMENT. NO EVIDENCE OF FUEL IN THE WRECKAGE WAS FOUND AND THE SUCCESSFUL ENGINE TEST RUN DID NOT REVEAL ANY MECHANICAL MALFUNCTIONS.

## Aircraft

- Registration: [N8472V](https://openairdocs.org/aircraft/N8472V), registered now, S/N 2232R (OpenAirDocs)
- Reported make and model: Ayres S2R
- Registry model: [Rockwell International S-2R](https://openairdocs.org/model/rockwell-international-s-2r) (registry code 7630202) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R1340 series](https://openairdocs.org/engine/pratt-whitney-r1340-series) (registry code 52016, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 2232R
- Airframe hours: 4994
- Engines: P&W R1340ANI 600 horsepower reciprocating
- Damage: Substantial damage
- Flight: Positioning, Part 91 subpart F
- Registered owner: Billy J. Stewman
- Airworthiness certificate: Special, Restricted (Special)
- Last inspection: Unknown, May 11, 1990, 2 hours before
- Departed: MSA, MOUNT PLEASANT, TX
- Destination: 5R5, WHARTON, TX

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; commercial; airplane ratings: single-engine land; medical: class 2, valid medical--w/ waivers/lim; seat: front; flight hours: 2,835 total, 510 in this make and model, 2,688 as pilot in command, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 120° at 10 knots
- Visibility: 50 statute miles
- Lowest ceiling: none
- Temperature: 95 °F, dew point 64 °F
- Altimeter: 29.00 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 19900615023929A](https://openairdocs.org/incident/19900615023929A), Jun 15, 1990: Ayres S2RR1340REST, Mcgregor, TX, Substantial damage. Ran out of fuel on a ferry flight. Landed in tall grass field with ditches.

## Other investigations on N8472V (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 DFW08LA223](https://openairdocs.org/ntsb/DFW08LA223), Sep 1, 2008: Rockwell International S-2R (N8472V), Uvalde, TX, substantial damage. Probable cause: A total loss of engine power due to the improper use of unauthorized replacement parts in the engine and repeated operation of the engine in an over-temperature condition.

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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