SEA83FA121

NTSB accident investigation · Learjet 35 · Seattle, WA · June 9, 1983

Accident · No injuriesField investigationFinal report
Date
June 9, 1983, 07:07 local (14:07 UTC)
Place
Seattle, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N1976LLearjet 35
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19830609024719A
Case key
39615

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.

Airframe/component/system failure/malfunctionTakeoff - initial climb
Door,passenger - openCause
Aircraft preflight - inadequatePilot in commandCause
Visual/aural perceptionPilot in commandCause
Dragged wing,rotor,pod,float or tail/skidTakeoff
Aborted takeoff - performedCopilot/second pilotFactor

Analysis

The acft dragged the right wing tip tank and ruptured it after the passenger door opened during takeoff. During the aborted takeoff the acft oscillated right, left and right before making ground contact on the right wing. The highest alt attained was about 100 ft AGL. Before takeoff a purolator cargo handler interrupted the captain closing the door to give him a package. The capt went to secure this package and the cargo handler closed the door. After the capt was in his seat he and the co-pilot failed to note the red door warning light mentally regarding it as a malfunctioning fuel warning even though these lights are separated by 3 other lights. During the takeoff at about 110 KTS the door opened and the abort commenced. The cargo handler was interviewed and admitted closing the door but said he never latched the door since it requires a key to activate it. This was always done by the crew.

Aircraft

Registration
N1976L
Reported as
Learjet 35
Category
Airplane
Serial number
053
Airframe hours
3,714
Engine
Airesearch TFE-731-2-2B, 3,500 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 135
Registered owner
Global Jet
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · April 12, 1983 · 33 hours before
Destination
PDX · Portland, OR
Flight plan
IFR
Airport
BFI · Boeing Field

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
26
Certificates
Airline transport, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
2,325 total · 112 in this make and model · 1,294 as pilot in command · 223 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
160° at 8 knots
Visibility
7 statute miles
Lowest ceiling
2,900 ft broken
Temperature
64 °F, dew point 48 °F
Altimeter
29.00 inHg
Observed at
BFI

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.