# NTSB FTW93FA061: Beech C24R, N3809Q, Tulsa, OK, December 29, 1992

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: December 28, 1992, 20:30 local (Dec 29, 1992, 02:30 UTC)
- Place: Tulsa, OK
- Coordinates: 36.190071, -95.910026 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=36.1901&lon=-95.9100&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 3 fatal
- Status: Completed, report September 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 18584
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW93FA061
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/18584/pdf
- Page: https://openairdocs.org/ntsb/FTW93FA061

## Probable cause

THE PILOT'S DISREGARD OF AND DESCENT BELOW THE PUBLISHED DECISION HEIGHT. FACTORS WERE HIS FAILURE TO MAINTAIN PROPER GLIDE PATH AND LOCALIZER ALIGNMENT.

## Sequence of events

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

- In flight collision with object, approach - faf/outer marker to threshold (ifr)
  - object - tree(s)
  - decision height - disregarded, pilot in command (cause)
  - proper glidepath - not maintained, pilot in command (contributing factor)
  - proper alignment - not maintained, pilot in command (contributing factor)
  - light condition - dark night
  - weather condition - low ceiling
  - weather condition - fog
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT WAS EXECUTING AN ILS APPROACH IN DARK NIGHT IMC, WHEN THE AIRPLANE IMPACTED TREES AT THE 50 FOOT AGL LEVEL, ABOUT 150 FEET BELOW THE DECISION HEIGHT.  THE AIRPLANE SUBSEQUENTLY IMPACTED THE GROUND AND BURNED.  THE TREES WERE ABOUT 1/2 MILE SHORT OF AND 1/2 MILE LEFT OF THE EXTENDED CENTERLINE OF THE LANDING RUNWAY WHICH WAS NOT EQUIPPED WITH AN APPROACH LIGHTING SYSTEM.  A PARALLEL RUNWAY, WHICH EXTENDED OUT 1,000 FEET BEYOND THE LANDING RUNWAY WAS EQUIPPED WITH AN ILS AND MEDIUM INTENSITY APPROACH LIGHTING SYSTEM, SEQUENCED FLASHING LIGHTS AND RUNWAY CENTERLINE LIGHTS.  THE AIRPLANE IMPACTED THE TREES ABOUT MIDWAY BETWEEN THE TWO RUNWAYS, ON A HEADING TOWARD THE SECOND RUNWAY.

## Aircraft

- Registration: [N3809Q](https://openairdocs.org/deregistered/N3809Q-1994-06-22), registration cancelled 1994-06-22, S/N MC748 (OpenAirDocs)
- Reported make and model: BEECH C24R
- Registry model: [Beech C24R](https://openairdocs.org/model/beech-c24r) (registry code 1151254) (OpenAirDocs)
- Category: Airplane
- Serial number: MC-748
- Airframe hours: 1900
- Engines: LYCOMING IO-360-A1B6 180 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Personal, Part 91
- Operator: Robertson, James R., doing business as Robertson Aviation
- Registered owner: Robertson, James R.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 4, 1992, 30 hours before
- Departed: SGF, SPRINGFIELD, MO
- Flight plan: IFR
- Airport: TUL, Tulsa Intl., runway 18, 6,101 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial, flight instructor; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 391 total, 41 in this make and model, 339 as pilot in command, 30 in the last 90 days, 13 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 160° at 11 knots
- Visibility: 1 statute miles
- Lowest ceiling: 200 ft overcast
- Temperature: 50 °F, dew point 50 °F
- Altimeter: 30.00 inHg
- Observed at: TUL, 1 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 19921228051909A](https://openairdocs.org/incident/19921228051909A), Dec 28, 1992: Beech C24R, Tulsa, OK, Destroyed, 3 fatal. Struck trees on final short of runway on ILS approach. Was on 90 degree from localizer heading on impact.

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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