LAX84LA349

NTSB accident investigation · Lockheed L-1011-385-3 · Los Angeles, CA · June 11, 1984

Accident · No injuriesLimited investigationFinal report
Date
June 11, 1984, 14:03 local (21:03 UTC)
Place
Los Angeles, CA
Injuries
157 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N501PALockheed L-1011-385-3
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840611052259I
Case key
24043

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

On this page

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
Landing gear,normal retraction/extension assembly - failure,totalCause

Analysis

Shortly after the aircrew moved the gear handle from 'up' to 'off', during initial climb, they heard a loud bang in the nosewheel area. They returned to the arpt & landed after dumping fuel. An exam revealed that both lower attach lugs on the nose gear crank assembly had failed & allowed the retract actuator arm to penetrate the wheel well bulkhead & cargo compartment floor. A metallurgical exam revealed that the left lug had failed in overload after failure of the right lug. The fracture surface of the right lug was too badly damaged for an evaluation; however, some intergranular corrosion was noted in the remaining fracture face.

Aircraft

Registration
N501PA
Reported as
Lockheed L-1011-385-3 (L-1011-385)
Category
Airplane
Serial number
193Y-1176
Airframe hours
10,064
Engine
Rolls-Royce RB 211, 50,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 121
Registered owner
Pan American World Airways Inc
Airworthiness certificate
Standard, Transport
Departed
LAX · Los Angeles, CA
Destination
MIA · Miami, FL
Flight plan
IFR
Airport
LAX · Los Angeles Int'L, runway 25, 12,091 × 150 ft, concrete

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
50
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
15,783 total · 2,483 in this make and model · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
230° at 14 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
70 °F, dew point 52 °F
Altimeter
29.00 inHg
Observed at
LAX, 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.