ATL99LA006

NTSB accident investigation · Hiller FH-1100 · Fayette, MS · October 10, 1998

Accident · No injuriesLimited investigationFinal report
Date
October 10, 1998, 10:20 local (15:20 UTC)
Place
Fayette, MS
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N580RHHiller FH-1100
Weather
Visual (VMC) · Day
Status
Completed · report February 16, 2001
Report
Approved by Office Director
FAA report
19981010028849A
Case key
44144

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

The fuel filter contamination which resulted in the loss of engine power. The air leak in the fuel system was a factor.

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
Fuel system,filter - contamination,other than waterCause
Fuel system - leakFactor
Forced landingDescent - emergency
On ground/water collision with objectEmergency landing
Object - otherFactor

Analysis

According to the pilot, while making a 180 degree turn, the boost pump fail light came on. Shortly afterwards the engine shut down at about 150 feet AGL. He selected a field for an emergency landing and entered an autorotation. During the touchdown phase of the autorotation, the helicopter collided with a log and rolled over. According to the pilot, there was insufficient RPM to stop the roll over. Examination of the engine concluded that the fuel supply system had an air leak between the fuel tank and the engine driven fuel pump. Also both the airframe and engine fuel filters were clogged with an unidentifiable brownish, jelly-like substance. A review of the maintenance log revealed that the last 100 hour inspection was 98 hours before the accident. There were no further indications of any other maintenance done on the fuel system.

Factual narrative

On October 10, 1998, at 1020 central daylight time, a Hiller FH-1100, N580RH, collided with a log, while attempting an emergency landing near Fayette, Mississippi. The aerial application flight was operated by Ward Aviation Incorporated under the provisions of Title 14 CFR Part 137 with visual flight rules. Visual weather conditions prevailed at the time of the accident, with no flight plan filed. The commercial rated pilot was not injured, and the helicopter was substantially damaged. The flight departed Fayette, Mississippi, at 1007 of the same day.

According to the pilot, while making a 180 degree turn, the boost pump fail light came on. Shortly afterwards the engine shutdown at about 150 feet AGL. He selected a field for an emergency landing and entered an autorotation. During the touchdown phase of the autorotation, the helicopter collided with a log and rolled over. The pilot also stated that there was insufficient RPM to stop roll over (see attached pilot statement).

The examination of the engine and the fuel supply vacuum system disclosed that there was an air leak between the fuel tank and the engine driven fuel pump. Also both the airframe and engine fuel filters were clogged with an unidentifiable brownish, jelly-like substance. A review of the maintenance log revealed that the last 100 hour inspection was 98 hours before the accident. There were no further indications of any other maintenance done on the fuel system. (see attached inspector's report).

Aircraft

Registration
N580RH
Reported as
Hiller FH-1100
Category
Helicopter
Serial number
213
Airframe hours
4,800
Engine
Allison 250-C-18, 317 horsepower, turbo shaft
Damage
Substantial damage
Flight
Aerial application · Part 137
Registered owner
Ward Aviation Inc.,
Airworthiness certificate
Standard, Normal; Special, Restricted (Special)
Last inspection
100 hour · August 31, 1997 · 98 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
53
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
26,000 total · 1,500 in this make and model · 26,000 as pilot in command · 200 in the last 90 days · 100 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
100° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
68 °F, dew point 50 °F
Altimeter
30.00 inHg
Observed at
HEZ, 15 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.