NYC89IA185

NTSB incident investigation · Boeing 727-254 · Boston, MA · August 10, 1989

Incident · Minor injuriesIncident investigationFinal report
Date
August 10, 1989, 10:46 local (14:46 UTC)
Place
Boston, MA
Injuries
2 minor, 54 uninjured
Damage
Minor damage
Phase of flight
Approach
Aircraft
N915TSBoeing 727-254
Weather
Visual (VMC) · Day
Status
Completed · report August 26, 1992
Report
Approved by Office Director
Safety recommendations
Yes
FAA report
19890810048589I
Case key
36313

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

On this page

Probable cause

The failure of the landing gear drag brace to unlock during landing. Contributing was the failure of pacific southwest airlines to catch the incorrect assembly. An additional factor was the use of faulty information by eastern airlines and their decision to not make the inspection required by the Boeing service letter.

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/malfunctionApproach
Landing gear,nose gear assembly - failure,totalCause
Maintenance,overhaul - inadequateOther maintenance personnelCause
Light condition - daylight
Maintenance,service bulletin/letter - information insufficientOther maintenance personnelFactor
Gear not extendedLanding - flare/touchdown

Analysis

The crew of a Boeing 727 was unable to lower the nose landing gear by either normal means or by use of the manual handcrank. A nose gear up landing with an emergency evacuation through the L1/R1 exits was made. Post incident investigation showed that both links which remove the locking pawls in the nose gear drag brace were fractured. When examined at Boeing metallurgical laboratory, no evidence was found that bushings were installed.

Aircraft

Registration
N915TS
Reported as
Boeing 727-254
Category
Airplane
Serial number
20252
Airframe hours
35,787
Engine
P&W JT8D-7B, 14,000 lbs thrust, turbo fan
Damage
Minor damage
Flight
Part 121
Registered owner
Trump Shuttle
Airworthiness certificate
Standard, Normal
Last inspection
Continuous airworthiness · July 29, 1988 · 931 hours before
Departed
LGA · Flushing, NY
Flight plan
IFR
Airport
BOS · Logan Intl, runway 33L, 10,081 × 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
47
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine sea, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
13,900 total · 7,500 in this make and model · 2,800 as pilot in command · 55 in the last 90 days · 38 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 8 knots
Visibility
9 statute miles
Lowest ceiling
None
Temperature
73 °F, dew point 57 °F
Altimeter
30.00 inHg
Observed at
BOS

FAA reports on this event · 1

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