MIA85FA029

NTSB accident investigation · Gates Learjet 24F · St. Thomas · November 10, 1984

Accident · FatalField investigationFinal report
Date
November 10, 1984, 19:06 local (23:06 UTC)
Place
St. Thomas
Injuries
2 fatal, 1 serious, 1 minor
Damage
Destroyed
Phase of flight
Approach
Aircraft
N81MCGates Learjet 24F
Weather
Visual (VMC) · Night/dark
Status
Completed
Report
Approved by Office Director
FAA report
19841110061269A
Case key
31210

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

In flight collision with terrain/waterApproach - vfr pattern - final approach
In-flight planning/decision - poorPilot in commandFactor
Pilot in commandFactor
Planned approach - poorPilot in commandFactor
Lack of familiarity with geographic areaPilot in commandFactor
Crew/group coordination - poorPilot in commandFactor
Light condition - dark nightFactor
Proper glidepath - not attainedPilot in commandCause
Terrain condition - water,glassy
Proper altitude - not maintainedPilot in commandCause

Analysis

While executing a night visual approach to runway 9 in visual meteorological conditions the aircraft was allowed to descend; crashing into water 2 miles short of the runway. The pilot was not familiar with the airport and failed to make use of a full instrument landing system and visual approach slope indicating system which were operational for run-way 9 at the time of the accident. The pilot stated there were no mechanical malfunctions with the aircraft which attributed to the accident. The aircraft was equipped with a radar altimeter system which also was not used by the plt. The plt performed two missed approaches because the arpt was not in sight. The accident occurred during the 3rd attempt. Neither the PIC nor the co-plt were properly certificated for the flt.

Aircraft

Registration
N81MC
Reported as
Gates Learjet 24F
Category
Airplane
Serial number
344
Airframe hours
2,643
Engine
GE CJ-610-6, 2,950 lbs thrust, turbo fan
Damage
Destroyed
Flight
Business · Part 91
Registered owner
Lisle Aircraft Inc.
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · March 5, 1984 · 22 hours before
Departed
FLL · Ft.Lauderdale, FL
Flight plan
IFR
Airport
STT · Harry S. Truman, runway 9, 5,358 × 150 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
39
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
10,190 total · 3,000 in this make and model · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
150° at 6 knots
Visibility
40 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F
Altimeter
29.00 inHg
Observed at
STT, 2 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.