FTW90MA161

NTSB accident investigation · Grumman G-159 · Houston, TX · August 23, 1990

Accident · FatalMajor investigationFinal report
Date
August 23, 1990, 17:20 local (22:20 UTC)
Place
Houston, TX
Injuries
3 fatal, 4 serious, 8 minor
Damage
Destroyed
Phase of flight
Initial climb
Aircraft
N80RDGrumman G-159
Weather
Visual (VMC) · Day
Status
Completed · report August 11, 1992
Report
Approved by Office Director
FAA report
19900823035319A
Case key
23186

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

Partial failure of the left engine fuel pump, which resulted in a partial loss of power in the left engine, but not enough of a power loss to trigger and/or complete the autofeathering operation of the left propeller, thus allowing insufficient time for the crew to manually feather the propeller or attain VMC (for the aircraft configured with an unfeathered propeller).

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/malfTakeoff - initial climb
1 engine - surge
Fuel system,pump - failure,partialCause
Fuel system - output lowCause
Loss of control - in flightTakeoff - initial climb
Propeller feathering - initiatedPilot in command
Propeller feathering - not attained
Airspeed(vmc) - not possible
In flight collision with terrain/waterTakeoff

Analysis

The passengers & witnesses reported that during takeoff, the aircraft yawed both left & right after lift-off. It then veered to the left & contacted the ground in a left wing low attitude between the runway & a parallel taxiway. An investigation revealed evidence that the left engine had sustained a partial loss of power due to a malfunctioning fuel pump. There were indications the power loss was not sufficient to trigger or allow completion of the autofeathering operation of the left propeller. Feathering of the left propeller had been manually initiated, but the propeller had not reached the feather position before impact. Manual feathering operation required the feathering pump button be held about 5 sec. 'V' speeds (KIAS) for this flt were: V1 92, vr 99, V2 110, normal vmca (dead engine propeller feathered, flaps set for takeoff & aircraft out of ground effect) 101, vmca (dead engine propeller unfeathered/windmilling & flaps set for takeoff) 127 KTS. Exam of the actuators revealed the gear was retracted & the flaps were set for takeoff.

Aircraft

Registration
N80RD
Reported as
Grumman G-159
Category
Airplane
Serial number
198
Airframe hours
5,343
Engine
Rolls-Royce 529-8X, 2,185 horsepower, turbo prop
Damage
Destroyed
Fire
On-Ground
Flight
Executive/Corporate · Part 91
Operator
Rowan Companies
Registered owner
Rdc Marine, Inc
Airworthiness certificate
Standard, Transport
Last inspection
100 hour · June 3, 1990 · 40 hours before
Departed
IAH
Destination
MSY · New Orleans, LA
Flight plan
IFR
Airport
IAH · Houston Intl, runway 14L, 12,000 × 150 ft, concrete

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
60
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Toxicology
Performed
Flight hours
20,200 total · 760 in this make and model · 17,500 as pilot in command · 100 in the last 90 days · 25 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
180° at 8 knots
Visibility
15 statute miles
Lowest ceiling
20,000 ft broken
Temperature
84 °F, dew point 72 °F
Altimeter
29.89 inHg
Observed at
IAH

FAA reports on this event · 1

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