# NTSB FTW88MA047: Gates Learjet 36A, N79SF, Monroe, LA, January 8, 1988

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Major investigation · Final report
- Date: January 8, 1988, 05:19 local (11:19 UTC)
- Place: Monroe, LA
- Location: 32.5190° N, 92.0772° W: Placed by OpenAirDocs: center of Monroe, LA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=32.5190&lon=-92.0772&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Completed, report December 29, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 22687
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW88MA047
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22687/pdf
- Page: https://openairdocs.org/ntsb/FTW88MA047

## Sequence of events

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

- In flight collision with terrain/water, approach - iaf to faf/outer marker (ifr)
  - descent - excessive, pilot in command (cause)
  - inattentive, pilot in command (contributing factor)
  - level off - not performed, pilot in command (cause)
  - lack of total experience in type of aircraft, copilot/second pilot (contributing factor)

## Analysis

THE CREW WAS EXECUTING THE ILS APPROACH AND HAD TURNED BACK INBOUND ON THE PROCEDURE TURN TO THE OUTER MARKER WHEN THE CO-PILOT STATED THEY WERE 5.9 DME IN A CALM VOICE WITH NO INDICATION OF A PROBLEM. IMPACT WITH THE GROUND OCCURRED AT ABOUT 5.9 DME, APPROXIMATELY 10 STATUTE MILES FROM THE AIRPORT, WHILE THE AIRCRAFT WAS IN A SLIGHT NOSEUP, SLIGHT RIGHT WING DOWN ATTITUDE, WITH A HIGH VERTICAL RATE OF DESCENT, AND A HIGH FORWARD SPEED. THE AIRCRAFT WAS DEMOLISHED. NO EVIDENCE OF A PRE-IMPACT FAILURE OR MALFUNCTION OF THE AIRCRAFT OR ITS SYSTEMS COULD BE FOUND. THE COPILOT WAS NOT RATED IN THE AIRCRAFT AND HAD LOGGED A TOTAL OF 7.9 HOURS OF JET TIME IN HIS PERSONAL LOGBOOK.

## Aircraft

- Registration: [N79SF](https://openairdocs.org/deregistered/N79SF-2014-12-22), registration cancelled 2014-12-22, S/N 041, built 1978 (OpenAirDocs)
- Reported make and model: GATES LEARJET 36A
- Registry model: [Gates Lear Jet 36A](https://openairdocs.org/model/gates-lear-jet-36a) (registry code 5170603) (OpenAirDocs)
- Registry engine: [Garrett TFE731 series](https://openairdocs.org/engine/garrett-tfe731-series) (registry code 29001, turbo-fan) (OpenAirDocs)
- Category: Airplane
- Serial number: 041
- Airframe hours: 3039
- Engines: GARRETT TFE-731-2-2B 3500 lbs thrust turbo fan
- Damage: Destroyed
- Flight: Part 135
- Operator: Phoenix Air
- Registered owner: Phoenix Air
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, December 26, 1987
- Departed: MEM, MEMPHIS, TN
- Flight plan: IFR
- Airport: MLU, Monroe Reg., runway 4, 7,507 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; toxicology performed; flight hours: 3,355 total, 528 in this make and model

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 20° at 5 knots
- Visibility: 7 statute miles
- Lowest ceiling: 1,000 ft overcast
- Temperature: 25 °F, dew point 18 °F
- Altimeter: 30.00 inHg
- Observed at: MLU, 9 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 19880108000359A](https://openairdocs.org/incident/19880108000359A), Jan 8, 1988: Lear 36A, Monroe, LA, Destroyed, 2 fatal. Collided with terrain on a ILS night approach. High speed and high descent rate. Had nose up and wing down atitude.

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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