NTSB ERA10LA458 — 2010-08-31 · Eagles Mere, Pennsylvania, United States

Current FAA registration · N765N

Make / Model: BIRD CK
Year of manufacture: 1932 · 78 years old at event
Engine: KINNER B5 SERIES (125 hp)
Seats / Engines: 3 seats · 1 engine
Last airworthiness date: 19600715
ADS-B equipped: Yes — Mode-S AA5547

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

N765N Bird CK None

Probable cause & findings

The loss of engine power due to fuel starvation as a result of degradation of the fuel tank coating which blocked the fuel supply.

Factual narrative

HISTORY OF FLIGHT

On August 31, 2010, at 1030 eastern daylight time, a Bird CK, N765N, was substantially damaged when it impacted terrain following a loss of engine power after takeoff from Eagles Mere Field Airport (40PN), Eagles Mere, Pennsylvania. The certificated private pilot was not injured. Visual meteorological conditions prevailed and no flight plan was filed for the local personal flight conducted under the provisions of Title 14 Code of Federal Regulations Part 91. On the day of the accident, the pilot performed a pre-flight inspection, and checked the oil and fuel quantity, before starting the engine and letting it warm up for about 8-10 minutes. The pilot departed from Merritt Field Airport (4PN7), and during the takeoff climb, the airplane’s engine "coughed," several times. The pilot reported this was not uncommon for older radial engines, but he remained in the traffic pattern as he checked the engine instruments and evaluated the engine condition. After noticing no anomalies with the engine instruments, the pilot decided to fly to 40PN, about 4 miles away. He landed uneventfully and taxied back for departure. The pilot departed from 40PN, and as the airplane was about 3/4 down the runway, and at an altitude of about 150 feet, the engine lost power completely. The pilot decided he could not land straight ahead due to trees and terrain, and decided to make a left turn to return to the airport. He attempted to lower the nose of the airplane in an attempt to gain airspeed. As the airplane was about 15 feet above the ground, it “stalled,” and impacted the ground at an approximate 45-degree angle. The airplane then spun laterally and impacted a fence.

PERSONNEL INFORMATION

The pilot held a private pilot certificate with ratings for airplane single-engine land, multiengine land, and instrument airplane. His most recent second-class medical certificate was issued on April 7, 2010. At that time, he reported 1,600 hours of total flight experience.

AIRCRAFT INFORMATION

According to the pilot, the airplane was manufactured in 1932 and had been recently restored. The restoration took about 5 years and the airplane had accumulated about 5 hours of flight time since the restoration was completed. The antique biplane was powered by a Kinner B-54, 125-horsepower, radial engine. Examination of the aircraft and engine logbooks revealed the airplane was purchased in November 2005, with a total time of 1,513 hours. The engine was completely overhauled and reinstalled in the airplane on September 1, 2009. The most recent annual inspection was completed on October 1, 2009, at a total aircraft time of 1,516 hours.

METEOROLOGICAL INFORMATION

The recorded weather at Williamsport Regional Airport (IPT), about 16 miles to the southwest of the accident site, at 1054, included wind from 220 degrees at 4 knots, 7 miles visibility, clear skies, temperature 24 degrees C, dew point 18 degrees C, and altimeter setting 30.23 inches of mercury.

WRECKAGE AND IMPACT INFORMATION

The airplane was examined after the accident by a Federal Aviation Administration (FAA) inspector. According to the inspector, the bi-plane sustained substantial damage to all four wings. Examination of the fuel tank revealed it was about 1/3 full of fuel. The inspector examined the fuel storage tank and truck used to fuel the airplane, and he noticed no contamination or water in the 100LL aviation fuel. He also noted the carburetor heat control was in the off position. Further examination revealed that during the restoration of the airplane, the inside of the fuel tank was coated with an FAA approved product specifically designed for sealing older fuel tanks. This coating peeled off in large sheets and collected in the sump of the tank, blocking the fuel supply to the carburetor. The antique biplane had recently undergone a complete restoration, including an overhaul of the engine. The accident flight was one of the first flights since the restoration was completed. After performing a preflight inspection, the pilot departed from the runway and during the takeoff climb, the engine "coughed," several times. The pilot checked the engine instruments and evaluated the engine condition, while remaining in the traffic pattern. After noticing no anomalies with the engine instruments, the pilot decided to fly to another airport, about 4 miles away. He landed uneventfully and taxied back for departure. Upon takeoff, as the airplane was about 3/4 down the runway, and at an altitude of about 150 feet, the engine lost power completely. The pilot was unable to land straight ahead due to trees and terrain, and decided to return to the airport. During the turn, the airplane stalled, and impacted the ground. Examination of the airplane revealed that during the restoration, the inside of the fuel tank was coated with an FAA approved product specifically designed for sealing older fuel tanks. This coating peeled off in large sheets and collected in the sump of the tank, blocking the fuel supply to the carburetor. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

C Aircraft-Aircraft power plant-Engine (reciprocating)-(general)-Failure - C
C Aircraft-Aircraft systems-Fuel system-Fuel distribution-Damaged/degraded - C
— Aircraft-Fluids/misc hardware-Fluids-Fuel-Not specified

Verbatim from NTSB's published report. Source file NTSB_2010_ERA10LA458.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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