# NTSB FTW85LA092: Gates Learjet 25B, N55PT, Oklahoma City, OK, January 5, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: January 5, 1985, 16:00 local (22:00 UTC)
- Place: Oklahoma City, OK
- Coordinates: 35.479679, -97.649536 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.4797&lon=-97.6495&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 6 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21653
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW85LA092
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21653/pdf
- Page: https://openairdocs.org/ntsb/FTW85LA092

## Sequence of events

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

- Overrun, landing - roll
  - distance - misjudged, pilot in command (cause)
  - airspeed - misjudged, pilot in command (cause)
  - proper touchdown point - exceeded
  - remedial action - delayed, pilot in command (cause)
  - go-around - not performed
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - soft (contributing factor)
  - terrain condition - wet (contributing factor)

## Analysis

THE PLT-IN-COMMAND (PIC) REPORTED THAT AFTER TOUCHDOWN, THE SPOILERS & BRAKES WERE APPLIED, BUT NO BRAKING ACTION WAS FELT ALTHOUGH PEDDLE PRESSURE WAS EVIDENT. HE STATED THAT BY THE TIME IT WAS CLEAR THAT THE BRAKES WERE INEFFECTIVE,INSUFFICIENT RWY REMAINED TO GO AROUND. HE STATED THAT POWER WAS REDUCED & THE ACFT WENT OFF THE END OF THE RWY. NO SKID MARKS WERE FOUND GOING OFF THE DEPARTURE END. WITNESSES SAID THE ACFT HAD LANDED ABOUT HALF WAY DOWN THE RWY. THEY DID NOT HEAR THE ENGS 'RUN UP' UNTIL AFTER THE ACFT WENT OFF THE RWY'S END. AFTER DEPARTING THE RWY, THE ACFT ENCOUNTERED SOFT MUDDY TERRAIN & WAS DAMAGED. NO DISCREPANCIES WERE FOUND DURING AN EXAM OF THE BRAKES, ANTI-SKID, SPOILERS, WING FLAPS EMERG BRAKES & DRAG CHUTE.

## Aircraft

- Registration: N55PT (not matched to a registry record)
- Reported make and model: Gates Learjet 25B
- Category: Airplane
- Serial number: 171
- Airframe hours: 4360
- Engines: GE CJ-610-6 2950 lbs thrust turbo jet
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Goodair, Inc.
- Airworthiness certificate: Standard, Normal
- Departed: PBI, W PALM BEACH, FL
- Flight plan: IFR
- Airport: OK15, Sundance, runway 35, 5,000 × 100 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 53; airline transport, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: right; flight hours: 18,085 total, 838 in this make and model, 17,848 as pilot in command, 87 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 300° at 4 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 46 °F
- Observed at: OKC

## 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 19850105070759A](https://openairdocs.org/incident/19850105070759A), Jan 5, 1985: Lear 25B, Oklahoma City, OK, Substantial damage. Landed long departing end of runway with no evidence of skid marks. No mechanical malfunctions found.

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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