BFO93LA058

NTSB accident investigation · Learjet 35 · Teterboro, NJ · March 18, 1993

Accident · No injuriesLimited investigationFinal report
Date
March 17, 1993, 19:35 local (Mar 18, 1993, 00:35 UTC)
Place
Teterboro, NJ
Injuries
5 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N304AFLearjet 35
Weather
Instrument (IMC) · Night/dark
Status
Completed · report May 10, 1994
Report
Approved by Office Director
FAA report
19930317005639A
Case key
11923

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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Probable cause

Improper planning or decision by the pilot in command (PIC). Factors related to the accident were: darkness, the adverse weather conditions, and the runway/terrain condition.

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.

Loss of control - on ground/waterLanding - roll
Light condition - dark nightFactor
Weather condition - low ceilingFactor
Weather condition - fogFactor
Weather condition - snowFactor
Airport facilities,instrument approach lights - unavailable
Airport facilities,runway/landing area condition - snow coveredFactor
Planning/decision - improperPilot in commandCause
Directional control - not maintainedPilot in commandCause
On ground/water encounter with terrain/waterLanding - roll
Terrain condition - snowbankFactor

Analysis

The pilot was cleared for an ILS runway 6 approach and reported that he had the runway in sight above the decision height. Snow was falling. After a 'successful' approach, the airplane touched down in the 'touchdown zone.' Spoilers, thrust reversers, and brakes were applied, but the airplane 'started to drift to the right.' The airplane impacted a snowbank on the right side of the runway. Its left main landing gear collapsed and the fuselage keel beam was damaged. Braking action was reported as 'nil' by the pilot. The runway had 'two to three inches' of wet snow. It was closed and plowed immediately following the accident. The tower controller had transmitted to the pilots 'last braking action fair by a westwind about 20 minutes ago.' The ATIS information included 'approach lights for runway 6 have been decommissioned.'

Aircraft

Registration
N304AF
Reported as
Learjet 35
Category
Airplane
Serial number
35-013
Airframe hours
4,980
Engine
Garrett TFE 731-2-2B, 3,500 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Executive/Corporate · Part 91
Operator
Apache Corporation
Registered owner
Apache Corporation
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · March 14, 1993 · 10 hours before
Departed
MSP · Minneapolis, MN
Destination
TEB
Flight plan
IFR
Airport
TEB · Teterboro, runway 6, 6,013 × 150 ft, asphalt

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
55
Certificates
Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
10,420 total · 1,330 in this make and model · 9,386 as pilot in command · 51 in the last 90 days · 15 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Instrument (IMC) · Night/dark
Wind
330° at 14 knots
Lowest ceiling
300 ft broken
Temperature
32 °F, dew point 30 °F
Altimeter
30.00 inHg
Observed at
TEB, 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.