CHI91DTG02

NTSB accident investigation · Sikorsky H-19-UH19D · Mcclusky, ND · June 18, 1991

Accident · No injuriesFinal report
Date
June 18, 1991, 08:30 local (13:30 UTC)
Place
Mcclusky, ND
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N6735Sikorsky H-19-UH19D
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 1993
Report
Approved by Office Director
FAA report
19910618022439A
Case key
14871

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

Failure of the engine blower/supercharger assembly. A factor related to the accident was: no suitable terrain in which to make an immediate emergency landing.

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(total) - mech failure/malfManeuvering - aerial application
Eng assembly,blower/impeller/integral supercharger - failure,totalCause
Forced landingManeuvering - turn to landing area (emergency)
Terrain condition - none suitableFactor
Hard landingDescent - uncontrolled

Analysis

Pilot was making a spray run along a canal approximately 75 feet below ground level. He began to climb out of the canal. He lost all power as he cleared the canal edge and made a hard landing. The main rotor blades severed the tail boom on landing. Investigation revealed a failure of the blower/supercharger seal.

Aircraft

Registration
N6735
Reported as
Sikorsky H-19-UH19D
Category
Helicopter
Serial number
54-1416
Airframe hours
3,100
Engine
Wright R-1300, 700 horsepower, reciprocating
Damage
Substantial damage
Flight
Aerial application · Part 137
Operator
Shawn B. Morten
Registered owner
Shawn B. Morten
Airworthiness certificate
Special, Restricted (Special)
Last inspection
Annual · September 30, 1990 · 35 hours before

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
31
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
5,800 total · 150 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 8 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
68 °F

FAA reports on this event · 1

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