WPR09CA103

NTSB accident investigation · Aeronca 7BC · Half Moon Bay, CA · January 29, 2009

Accident · No injuriesData collectionFinal report
Date
January 29, 2009, 15:00 local (23:00 UTC)
Place
Half Moon Bay, CA
Injuries
1 uninjured
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N2805EAeronca 7BC
Defining event
Enroute-cruise: Fuel exhaustion
Weather
Visual (VMC) · Day
Status
Completed · report May 6, 2009
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration
FAA report
20090129001209A
Case key
73290

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

A total loss of engine power due to fuel exhaustion as a result of the pilot's failure to perform an accurate visual fuel quantity check prior to initiating the flight.

Findings · 3

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Fluids: fuelAircraft › Fluids/misc hardware · Inadequate inspectionAeronca 7AC: 4 casesAll aircraft: 1,695 casesProbable cause
Planning/preparation: fuel planningPersonnel issues › Task performance · PilotAeronca 7AC: 3 casesAll aircraft: 719 casesProbable cause
Fluids: fuelAircraft › Fluids/misc hardware · Fluid levelAeronca 7AC: 4 casesAll aircraft: 1,695 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

While returning from an island sightseeing flight about 25 miles into the Pacific Ocean, the pilot of the rented vintage airplane heard what he thought was a change in engine sound. About five minutes later, while cruising at about 2,400 rpm, with oil pressure and oil temperature indicating normal, the engine suddenly stopped producing power. Although the wood propeller continued to windmill until the airplane was slowed to about 60 miles per hour, the pilot could not get the engine restarted and ultimately ditched in the ocean. The duration of the flight was 1.6 hours and the pilot reported that the 13-gallon fuel tank appeared full prior to engine start. A subsequent records review revealed that the airplane had been flown for .6 of an hour on the previous day, and had not subsequently been refueled. According to the certified flight instructor, who checked the pilot out in the airplane, the pilot was informed that due to its limited fuel quantity, when fully fueled, the airplane needed to be back at the airport two hours after departure. The total time logged since the last refueling was 2.2 hours, and the flight to the island included an outbound climb to about 5,000 feet.

Factual narrative

While returning from an island sightseeing flight about 25 miles out into the Pacific Ocean, the pilot of the rented 1946 Aeronca 7BC heard what he thought was a change in engine sound. About five minutes later, while cruising at about 2,400 rpm, with oil pressure and oil temperature indicating normal, the engine suddenly stopped producing power. Although the wood propeller continued to windmill until the airplane was slowed to about 60 miles per hour, the pilot could not get the engine restarted, and ultimately ditched in the ocean. The duration of the flight was 1.6 hours, and the pilot reported to the NTSB that the 13-gallon fuel tank appeared full prior to engine start. A subsequent records review revealed that the airplane had been flown for .6 of an hour on the previous day, and had not subsequently been refueled. According to the CFI who checked the pilot out in the airplane, the pilot was informed that due to its limited fuel quantity, when fully fueled, the airplane needed to be back at the airport two hours after departure. The total time logged since the last refueling was 2.2 hours, and the flight to the island included an outbound climb to about 5,000 feet.

Aircraft

Registration
N2805E
Reported as
Aeronca 7BC
Category
Airplane
Serial number
7AC-6388
Engine
Continental C85F, 85 horsepower, reciprocating
Damage
Destroyed
Flight
Personal · Part 91
Operator
AeroDynamic Aviation
Registered owner
Amelia Reid Aviation LLC
Airworthiness certificate
Standard, Normal
Departed
KRHV · San Jose, CA
Destination
KRHV · San Jose, 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
49
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, Without waivers/limitations
Last flight review
July 20, 2008
Seat
Front
Flight hours
337 total · 27 in this make and model · 3 in the last 90 days · 2 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
10 statute miles
Lowest ceiling
None
Temperature
64 °F, dew point 34 °F

FAA reports on this event · 1

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