DEN86LA239

NTSB accident investigation · Piper PA-23E-250 · Grand Forks, ND · August 26, 1986

Accident · No injuriesLimited investigationFinal report
Date
August 26, 1986, 15:35 local (20:35 UTC)
Place
Grand Forks, ND
Injuries
6 uninjured
Damage
Substantial damage
Phase of flight
Taxi
Aircraft
N900TSPiper PA-23E-250
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19860826059359A
Case key
17041

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/malfunctionTaxi - to takeoff
Landing gear,normal retraction/extension assembly - bentCause
Landing gear,normal retraction/extension assembly - disconnectedCause
On ground/water collision with objectTaxi - to takeoff
Airport facilities,runway/landing area condition - rough/unevenFactor
Main gear collapsedTaxi - to takeoff

Analysis

The acft was en route from flin flon airport, manitoba, cd, to mason city, IA, and had stopped at Grand Forks, ND, for fuel and to clear customs. During taxi for takeoff, the acft struck a 1-inch concrete lip on the ramp and the right main landing gear collapsed. Post accident examination revealed the actuator rod end was bent and one of four springs on the overcenter cam device was detached from its proper attach point and was excessively stretched. With the acft on jacks the spring was reattached and the gear was extended, trapping the spring between the downlock switch and the downlock overcenter mechanism. With some weight applied to the landing gear, a firm upward pressure was applied to the overcenter device and the right main landing gear retracted. Further tests revealed that the landing gear selector handle did not always catch the safety latch when placed in the neutral position, and that it was possible for the selector to go from down to up without triggering the latch.

Aircraft

Registration
N900TS
Reported as
Piper PA-23E-250
Category
Airplane
Serial number
27-7405429
Engine
Lycoming IO-540-C4B5, 250 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
James Kenney, doing business as Vermillion Flying Service
Airworthiness certificate
Standard, Normal
Departed
GFK
Destination
MCW · Mason City, IA
Flight plan
IFR
Airport
GFK · Grand Forks-Mark Andrews

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
35
Certificates
Commercial, Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Valid Medical--no waivers/lim.
Seat
Left
Flight hours
5,725 total · 33 in this make and model · 4,225 as pilot in command · 70 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
360° at 10 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
70 °F

FAA reports on this event · 1

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