# NTSB FTW88LA099: Beech B55, N7330R, Ada, OK, May 12, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 12, 1988, 15:30 local (20:30 UTC)
- Place: Ada, OK
- Coordinates: 34.770713, -96.660293 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.7707&lon=-96.6603&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report December 3, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 22639
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW88LA099
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22639/pdf
- Page: https://openairdocs.org/ntsb/FTW88LA099

## Sequence of events

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

- Loss of control - on ground/water, takeoff - roll/run
  - directional control - not maintained, pilot in command (cause)
  - brakes(normal) - improper use of, pilot in command (contributing factor)
- Nose gear collapsed, takeoff - aborted
  - landing gear,nose gear - overload
  - terrain condition - rough/uneven (contributing factor)
  - other airport/runway maintenance - inadequate, airport personnel (contributing factor)
- Nose over, takeoff - aborted

## Analysis

THE PLT SAID ALL PRE-FLT PREP WERE NORMAL INCLUDING AN ENG RUN-UP. THE TAKEOFF WAS BEING MADE WITH LIGHT WINDS. AFTER ROLLING ABOUT 300 FT THE ACFT BEGAN A SWERVE TO THE RT WHICH THE PLT PERCEIVED WAS ASSOCIATED WITH A LOSS OF PWR ON THE RT ENG. THE PLT INITIATED AN ABORT AND BEGAN HEAVY BRAKING. THE ACFT CONTINUED IN A RT SWERVE AND DEPARTED THE RT SIDE OF THE RWY. THE FIELD ADJACENT TO THE RWY WAS PLOWED AND WAS ROUGH AND UNEVEN. WHEN THE NOSE WHEEL ENCOUNTERED A 12 IN DEEP FURROW THE NOSE GEAR COLLAPSED AND THE ACFT NOSED OVER. FAA EXAMINED THE WRECKAGE AND COULD NOT FIND ANY EVIDENCE TO EXPLAIN THE REPORTED LOSS OF PWR. THE INSPECTOR SAID LOCKED BRAKE SKID MARKS WERE FOUND ON THE RWY WHICH COULD BE ASSOCIATED WITH THE MAIN GEAR OF THE ACDT ACFT. HE SAID THE SKID MARKS BEGAN OPPOSITE EACH OTHER AND LED TO THE FINAL RESTING PLACE OF THE ACFT.

## Aircraft

- Registration: [N7330R](https://openairdocs.org/deregistered/N7330R-1989-10-16), registration cancelled 1989-10-16, S/N TC1788 (OpenAirDocs)
- Reported make and model: BEECH B55
- Registry model: [Beech 95-B55 (T42A)](https://openairdocs.org/model/beech-95-b55-t42a) (registry code 1152706) (OpenAirDocs)
- Category: Airplane
- Serial number: TC-1788
- Airframe hours: 1767
- Engines: CONTINENTAL IO-470-L 260 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Terry, Jack
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 30, 1988
- Departed: ADH
- Destination: SWO, STILLWATER, OK
- Airport: ADH, Ada Municipal, runway 17, 5,000 × 100 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; private; airplane ratings: single-engine land, multi-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 1,704 total, 491 in this make and model, 1,686 as pilot in command, 10 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 12 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 88 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: ADM, 36 nm away

## 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 19880512014669A](https://openairdocs.org/incident/19880512014669A), May 12, 1988: Beech 95B55, Ada, OK, Substantial damage. Reported power loss right engine. Aborted but veered right off runway into soft dirt. Collapsed nose gear. Flipped.

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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