FTW84FA335

NTSB accident investigation · Rockwell 690B · Fort Worth, TX · August 2, 1984

Accident · No injuriesField investigationFinal report
Date
August 2, 1984, 15:20 local (20:20 UTC)
Place
Fort Worth, TX
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N81865Rockwell 690B
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840802038129A
Case key
21140

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.

Main gear collapsedLanding - roll
Gear retraction - inadvertentPilot in commandCause

Analysis

The acfts right main landing gear retracted during landing roll. During initial examination of the gear by FAA it was noted that one of the two clevis fittings had separated from the gear casting. It remained attached to the rod end bearing on the push/pull rod of the extend/retract cylinder. Two persons pushing on the landing gear drag brace attempted to unlock the system. They were unsuccessful. The downlock nitrogen charge was bled off and then one person could push the drag brace enough to activate the gear light and horn in the cockpit. After the other downlock devices inthe form of bunger cords were removed, light pressure on the drag link activated the unsafe light and horn. This action took place after 1/8 inch movement of the drag brace. One inch movement was necessary to 'unlock' the gear for retraction. The drag brace was examined for evidence of some object having hit it with enough force to unlock it. Duringlanding. No such evidence was found.

Aircraft

Registration
N81865
Reported as
Rockwell 690B
Category
Airplane
Serial number
11510
Airframe hours
1,462
Engine
Airesearch TPE331-5-251K, 718 horsepower, turbo prop
Damage
Substantial damage
Flight
Business · Part 91
Operator
Interjet
Registered owner
Mckamy Aero Sales
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 25, 1984 · 2 hours before
Departed
DAL · Dallas, TX
Airport
FTW · Meacham, runway 16L, 7,500 × 150 ft, concrete

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
41
Certificates
Private, Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
6,210 total · 1,810 in this make and model · 5,860 as pilot in command · 88 in the last 90 days

Weather

Conditions
Visual (VMC) · Day
Wind
140° at 6 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point -0 °F

FAA reports on this event · 1

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