# NTSB FTW83LA229: Beech B60, N2053G, Afton, OK, May 9, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 9, 1983, 18:50 local (23:50 UTC)
- Place: Afton, OK
- Coordinates: 36.689037, -94.959815 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.6890&lon=-94.9598&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 20898
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW83LA229
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/20898/pdf
- Page: https://openairdocs.org/ntsb/FTW83LA229

## Sequence of events

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

- Overrun, landing - roll
  - airspeed - misjudged, pilot in command (cause)
  - brakes(normal) - excessive, pilot in command (cause)
  - landing gear,normal brake system - worn (contributing factor)
  - maintenance,inspection - inadequate, other maintenance personnel (contributing factor)
- On ground/water encounter with terrain/water, landing - roll

## Analysis

AFTER TOUCHDOWN THE PLT APPLIED BRAKES TO SLOW THE ACFT IN ORDER TO TURN OFF THE MID-FIELD EXIT, BUT THE ACFT WAS GOING TOO FAST FOR THE TURN. THE PLT STATED HE FELT THE BRAKES BEGIN TO BE INEFFECTIVE  AT THIS POINT. HE THEN DECIDED TO LET THE ACFT ROLL TO THE END OF THE RWY. THE BRAKES WOULD NOT HOLD WHEN HE APPLIED THEM NEAR THE END. THE PLT THEN ADDED FULL POWER IN ORDER TO PANCAKE THE ACFT INTO THE LAKE OFF THE END OF THE RWY. THE ACFT STRUCK THE WATER 75-100 YDS FROM SHORE. THE BRAKES WERE EXAMINED & THE BRAKE SYSTEM WAS CAPABLE OF OPERATION. HOWEVER, BOTH BRAKE DISKS WERE WORN BEYOND ALLOWABLE LIMITS. THE LEFT DISC MEASURED 0.403 INCH & THE RIGHT DISC MEASURED 0.401 INCH. MINUMUM IS 0.445. IN ADDITION,THE DISCS CONTAINED 'BLUE' SPOTS ON THEIR SURFACE INDICATING THAT THEY HAD BEEN SEVERELY OVERHEATED DURING THE LANDING.

## Aircraft

- Registration: [N2053G](https://openairdocs.org/deregistered/N2053G-2013-04-15), registration cancelled 2013-04-15, S/N P-489, built 1978 (OpenAirDocs)
- Reported make and model: BEECH B60
- Registry model: [Beech B-60](https://openairdocs.org/model/beech-b-60) (registry code 1153605) (OpenAirDocs)
- Registry engine: [Lycoming TI0-541 series](https://openairdocs.org/engine/lycoming-ti0-541-series) (registry code 41536, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: B-489
- Airframe hours: 1166
- Engines: LYCOMING TIO-541-E1C4 380 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Tcp Corp
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 2, 1983, 30 hours before
- Departed: CHK, CHICKASHA, OK
- Airport: OK33, Shangri-La, runway 17, 4,000 × 60 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 55; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 3,814 total, 489 in this make and model, 3,699 as pilot in command, 26 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 10 knots
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 70 °F

## 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 19830509018259A](https://openairdocs.org/incident/19830509018259A), May 9, 1983: Beech B60, Afton, OK, Substantial damage. Aircraft ran off end of runway during landing and crashed into lake. Brakes were worn but capable of operation.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.