DEN88LA025

NTSB accident investigation · Hughes 269C · Grand Forks, ND · November 19, 1987

Accident · No injuriesLimited investigationFinal report
Date
November 19, 1987, 10:15 local (16:15 UTC)
Place
Grand Forks, ND
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Uncontrolled descent
Aircraft
N11079Hughes 269C
Weather
Visual (VMC) · Day
Status
Completed · report December 27, 1988
Report
Approved by Office Director
FAA report
19871119066639A
Case key
17417

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.

Hard landingDescent - uncontrolled
Autorotation - attemptedDual student
Throttle/power control - inadequateDual studentCause
Adequate rotor rpm - not maintainedDual studentCause
Rotor rpm - not correctedPilot in command(cfi)Cause
Supervision - inadequatePilot in command(cfi)Cause
Roll overLanding - flare/touchdown

Analysis

The CFI was instructing the pvt rated dual student in simulated forced landings. During the power recovery following a practice autorotation, the engine failed to regain RPM at full throttle. During the forced landing, the helicopter nosed over at touchdown and the main rotor struck the terrain. A post accident engine run produced full rated power under test cell conditions. The engine inspection did not reveal evidence to explain the reported failure of the engine to respond.

Aircraft

Registration
N11079
Reported as
Hughes 269C
Category
Helicopter
Serial number
111006
Airframe hours
2,936
Engine
Lycoming HIO-360-D1A, 190 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
University Of North Dakota
Registered owner
University Of North Dakota
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 16, 1987 · 46 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
29
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Seat
Right
Flight hours
937 total · 71 in this make and model · 718 as pilot in command · 30 in the last 90 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 9 knots
Visibility
20 statute miles
Lowest ceiling
3,200 ft broken
Temperature
30 °F
Altimeter
30.00 inHg

FAA reports on this event · 1

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