CHI93DTG02

NTSB accident investigation · Aero Commander S2R · Hoople, ND · July 18, 1993

Accident · No injuriesFinal report
Date
July 17, 1993, 21:00 local (Jul 18, 1993, 02:00 UTC)
Place
Hoople, ND
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N5635XAero Commander S2R
Weather
Visual (VMC) · Day
Status
Completed · report December 2, 1994
Report
Approved by Office Director
FAA report
19930717024239A
Case key
9148

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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Probable cause

A loss of engine power due to a cracked engine cylinder.

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.

Loss of engine power(partial) - mech failure/malfManeuvering - aerial application
Engine assembly,cylinder - failure,partialCause
Forced landingDescent - emergency
Nose overLanding - roll

Analysis

The pilot stated that the engine began to run rough and lose power during a spray run. He released the load and attempted to make a landing on a nearby road. He was unable to reach the road and landed in a wheat field, nosing over. The #3 cylinder was found cracked.

Factual narrative

On July 17, 1993, at 2100 central daylight time (CDT), an Aero Commander S2R, N5635X, registered to Mid Continent Aircraft Corp., Hayti, Missouri, sustained substantial damage in a forced landing near Hoople, North Dakota. The airplane experienced a partial loss of engine power while the pilot was conducting aerial application operations under 14 CFR Part 137. Visual meteorological conditions prevailed at the time and no VFR flight plan was filed. The aircraft was substantially damaged and the commercial pilot was not injured. The flight originated at St. Thomas, ND, at 2040 CDT.

The pilot stated the engine began to run rough during a spray run. He said he released the load and attempted to make a landing on a nearby road, but did not have sufficient power to make it to the road. He landed in a wheat field, and the airplane nosed-over during landing roll.

The examination of the engine revealed the number 3 cylinder was cracked.

Aircraft

Registration
N5635X
Reported as
Aero Commander S2R
Category
Airplane
Serial number
1835R
Airframe hours
7,308
Engine
P&W R-1340-ANI, 600 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Darrel C. Bjornson
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · April 17, 1993 · 71 hours before
Departed
ND59 · St. Thomas, ND

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
46
Certificate
Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Center
Flight hours
9,589 total · 2,459 in this make and model · 9,429 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 5 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 61 °F
Observed at
GFK, 45 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.