DCA87MA012

NTSB accident investigation · Lockheed L1011 · Newark, NJ · November 13, 1986

Accident · No injuriesMajor investigationFinal report
Date
November 13, 1986, 12:25 local (17:25 UTC)
Place
Newark, NJ
Injuries
137 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N714DALockheed L1011
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Major Investigations Division
Safety recommendations
Yes
Case key
15870

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/malfunctionLanding - flare/touchdown
Wing - failure,partial
Wing - fatigueCause
Acft/equip,inadequate designManufacturerCause

Analysis

On November 13, 1986, the rear main spar of the right wing failed as delta flt 194 touched down on rwy 29 at Newark airport. The pilots stated that there was moderate turbulence on final approach and initial touchdown was on the right main gear first. The touchdown was firm but not hard which was confirmed from the 1.4G recorded on the dfdr. The 1.4G force is well within the landing gear certification limits. The spar web failure was caused by a fatigue crack that originated at a 'hi - loc' fastener hole located at the lower inboard corner of a doubler that surrounds the fuel filler valve which is mounted vertically on the spar web. The fatigue zone in the spar web had progressed about 6 3/4 inches before the web failed as the airplane touched down. The fracture in the spar web extended diagnally downward and outboard at 45 degrees from inboard wing station 241.0 to inboard station 293.5. The flight crew did not report any airplane malfunction during the flight.

Aircraft

Registration
N714DA
Reported as
Lockheed L1011
Category
Airplane
Serial number
193C1090
Engine
Rolls-Royce RB-211-22B, 42,000 lbs thrust, turbo fan
Damage
Substantial damage
Flight
Part 121
Operator
Delta Airlines
Registered owner
Delta Airlines Inc.
Airworthiness certificate
Standard, Transport
Last inspection
Continuous airworthiness · October 26, 1986 · 905 hours before
Departed
ATL · Atlanta, GA
Destination
EWR · Newark, NJ
Flight plan
IFR
Airport
EWR · Newark International, runway 29, 6,502 × 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
59
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
19,850 total · 2,400 in this make and model · 17,275 as pilot in command · 13,725 in the last 90 days · 6,643 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 19 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
39 °F, dew point 12 °F
Altimeter
30.00 inHg
Observed at
EWR

Other investigations on N714DA · 2

Matched to the same aircraft by N-number and date.