LAX97LA230

NTSB accident investigation · Beech 95-B55 · Beaumont, CA · July 3, 1997

Accident · Minor injuriesLimited investigationFinal report
Date
July 2, 1997, 19:50 local (Jul 3, 1997, 02:50 UTC)
Place
Beaumont, CA
Injuries
1 minor
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N2031WBeech 95-B55
Weather
Visual (VMC) · Day
Status
Completed · report December 31, 1998
Report
Approved by Office Director
FAA report
19970702016689A
Case key
29826

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

the pilot's inadvertent movement of the propeller controls, instead of the throttle levers, which resulted in an inadvertent dual engine shutdown. Factors relating to the accident were: the pilot's failure to properly secure the door during preflight, and his lack of recent experience in this make and model of airplane combined with habit interference.

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.

Miscellaneous/otherTakeoff
Door - not securedFactor
Aircraft preflight - inadequatePilot in commandFactor
Door - openFactor
Loss of engine power(total) - nonmechanicalCruise
2 engines
Throttle/power control - not identifiedPilot in command
Propeller feathering - inadvertent activationPilot in commandCause
Engine shutdown - inadvertentPilot in commandCause
Habit interferencePilot in commandFactor
Lack of recent experience in type of aircraftPilot in commandFactor
Forced landingEmergency descent/landing
Wheels up landingEmergency landing

Analysis

During takeoff, the pilot heard wind noise coming from the cabin door, but decided to continue the flight. After leveling off, however, the cabin door suddenly popped open. The pilot tried unsuccessfully to close the door, then failing that, tried to reduce his airspeed by retarding the throttles. Without looking, he inadvertently retarded the prop levers that were on the left side of the quadrant. Since the levers also served as feather switches when in the retarded position, both props went into full feather. The pilot attempted to bring both props out of feather, but because the aircraft was not equipped with unfeathering accumulators, he was unable. He finally restarted the left engine, but it did not immediately develop enough power to allow him to arrest his descent and maintain safe single engine airspeed. With only a few hundred feet of altitude remaining, he decided to make an emergency landing. The pilot reported that he regularly flew aircraft, which had throttles located on the left side of the quadrant. He also stated that he had not flown a 95-B55 in nearly 10 months, and then had only flown it 8 hours during the previous 12 months.

Factual narrative

On July 2, 1997, at 1950 hours Pacific daylight time, a Beech 95-B55, N2031W, en route to Palm Springs, California, made an emergency landing after a door came open in flight. The aircraft sustained substantial damage, and the pilot, the sole occupant, received minor injuries. The aircraft was being operated as a personal flight by Military Aircraft Restoration Corporation when the accident occurred. The flight originated in Chino, California, at 1930. Visual meteorological conditions prevailed at the time and no flight plan was filed.

The pilot reported that he had taken off from the Chino airport after deplaning a passenger. During takeoff he heard wind noise coming from the right cabin door. He said thought the door would remain locked and so elected to continue the flight rather than returning to Chino to re-secure the door.

The pilot had leveled off at 5,000 feet msl, when the right cabin door suddenly popped open. From his position in the left seat, he grabbed the door handle with his right hand and unsuccessfully attempted to close the door.

After unsuccessfully attempting to close the door, he tried to reduce his airspeed by retarding the throttles. Without looking at the control quadrant, he reached and brought back the prop levers that are located on the left side of the quadrant. Since the levers also serve as feather switches when they are in the full decrease position, both props went into full feather. The pilot realized his mistake and attempted to bring both props out of feather, but was unable because the aircraft was not equipped with unfeathering accumulators.

The pilot first attempted to restart the left engine and then the right; however, he was unsuccessful in both attempts. Next, he tried restarting the left engine again. During this try the engine started but it sputtered and, in his opinion, was not developing enough power to allow him to arrest his descent and maintain safe single engine airspeed.

At this point, the aircraft had descended to about 200 feet agl and was continuing to lose altitude. Rather than waiting to see if the engine power would increase, the pilot decided to make an emergency landing. He retarded the throttles, turned off the battery switch, and landed gear-up in an open field.

A postaccident inspection of the aircraft by FAA airworthiness inspectors revealed damage to both nacelles, props, and wings, as well as the belly and empennage.

The pilot reported that he regularly flies a number of multiengine aircraft in which the throttles are located on the left side of the quadrant. In the circumstances that preceded the accident he said he reacted instinctively, but erroneously, when he feathered the props. He also stated that he had not flown a 95-B55 since September 22, 1996, and then had completed only three flights, for a total of 8 hours, during the previous 12 months.

Aircraft

Registration
N2031W
Reported as
Beech 95-B55
Category
Airplane
Serial number
TC-2183
Airframe hours
1,610
Engine
Continental IO-470-L, 260 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
David Compton Tallichet
Airworthiness certificate
Standard, Normal
Last inspection
Annual · September 16, 1996 · 3 hours before
Departed
CNO · Chino, CA
Destination
PSP · Palm Springs, 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
74
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
4,400 total · 1,096 in this make and model · 3,900 as pilot in command · 23 in the last 90 days · 23 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
280° at 4 knots
Visibility
15 statute miles
Lowest ceiling
None
Temperature
81 °F
Altimeter
29.00 inHg
Observed at
RIV, 16 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.