LAX90FA248

NTSB accident investigation · McDonnell Douglas 369HS · Modesto, CA · July 9, 1990

Accident · Minor injuriesField investigationFinal report
Date
July 9, 1990, 09:55 local (16:55 UTC)
Place
Modesto, CA
Injuries
4 minor
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N505WWMcDonnell Douglas 369HS
Weather
Visual (VMC) · Day
Status
Completed · report November 23, 1992
Report
Approved by Office Director
FAA report
19900709024899A
Case key
26643

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

In-flight engine fire of undetermined origin.

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.

FireCruise
Engine compartment - fire
Reason for occurrence undeterminedCause
Hard landingLanding - flare/touchdown
Landing gear,main gear strut - separation

Analysis

The pilot and his passengers detected the odor of smoke as the helicopter circled while in cruise flight. The pilot entered a precautionary approach and landed in a vacant pasture. The aircraft landed hard and the in-flight fire consumed the aircraft's cabin/engine section. Ground witnesses confirmed that an in-flight fire erupted prior to the aircraft landing.

Aircraft

Registration
N505WW
Reported as
McDonnell Douglas 369HS
Category
Helicopter
Serial number
150698S
Engine
Allison 250-C18, 278 horsepower, turbo shaft
Damage
Destroyed
Fire
On-Ground
Flight
Business · Part 91
Operator
David L. Heath, doing business as Sunrise Helicopters, Inc.
Airworthiness certificate
Standard, Normal
Departed
SCK · Stockton, CA

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
42
Certificate
Commercial
Airplane ratings
Single-engine land
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
2,397 total · 25 in this make and model · 2,122 as pilot in command · 80 in the last 90 days · 45 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
310° at 8 knots
Visibility
20 statute miles
Lowest ceiling
None
Temperature
-0 °F, dew point -0 °F
Observed at
MOD, 6 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.

Other investigations on N505WW · 1

Matched to the same aircraft by N-number and date.