- Date
- April 20, 2012, 16:26 local (20:26 UTC)
- Place
- Yorktown, NY
- Injuries
- 2 minor
- Damage
- Substantial damage
- Phase of flight
- Enroute
- Aircraft
- N821SMRaytheon A36
- Defining event
- Enroute-cruise: Fuel starvation
- Weather
- Visual (VMC) · Day
- Status
- Completed · report May 9, 2013
- Report
- Approved by Office Director
- NTSB office
- Eastern Region Aviation
- Parties
- FAA FSDO, Continental Engines
- FAA report
- 20120420015079A
- Case key
- 83448
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 improper placement of the fuel selector, which resulted in fuel starvation and a total loss of engine power. Contributing to the accident was the pilot's failure to perform the published emergency procedure by the checklist.
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.
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
The airplane was in cruise flight at 7,000 feet when the engine lost power. The pilot requested vectors to the nearest airport but determined the airplane would not reach the requested landing site. He selected a forced landing site on a corporate complex and completed the forced landing, which resulted in substantial damage to the airplane. During the descent, he stated that he performed remedial actions in accordance with the checklist and switched the fuel selector from the right tank position to the left tank. Later, the pilot stated that he did not consult a checklist, but performed emergency action items "from memory." He added that the engine would surge during the descent but would not produce sufficient power to maintain altitude. A witness stated that he saw the airplane at low altitude near the campus and described the engine sound as surging between idle and "extremely high rpm." He said that the engine sounded as though it was "starving for fuel." Examination of the airplane revealed no preimpact mechanical anomalies. The fuel selector was found in a position between the left tank and right tank detents. A detailed examination revealed continuity of the fuel system, unobstructed fuel lines and filters, and an operational fuel selector. The engine was removed from the airplane and placed in a test cell, where it started immediately, accelerated smoothly, and ran continuously without interruption. The engine run revealed no anomalies that would have prevented normal operation and the production of rated power. A warning in the airplane manufacturer's Pilot's Operating Handbook stated: "POSITION [Fuel] SELECTOR IN DETENTS ONLY – NO FUEL FLOW TO ENGINE BETWEEN DETENTS" It is likely that the pilot moved the fuel selector during cruise flight but did not ensure that it was seated correctly in the detent. Shortly thereafter, the engine lost power. Because the pilot did not perform the requisite emergency procedures, he did not recognize that the fuel selector was not seated properly.
Factual narrative
On April 20, 2012, at 1626 eastern daylight time, a Hawker-Beechcraft Corporation A36, N821SM, was substantially damaged during a forced landing following a loss of engine power during cruise flight in Yorktown, New York. The certificated private pilot and passenger sustained minor injuries. The flight departed Teterboro Airport (TEB), Teterboro, New Jersey about 1600, and was destined for Norwood Memorial Airport (OWD), Norwood, Massachusetts. Visual meteorological conditions prevailed, and an instrument flight rules flight plan was filed for the personal flight, which was conducted under the provisions of Title 14 Code of Federal Regulations Part 91. In a written statement, the pilot stated that the airplane was in cruise flight at 7,000 feet when the engine lost power. He requested vectors to the nearest airport, but determined the airplane would not reach the requested landing site. He selected a forced landing site on the IBM corporate campus in Yorktown, and completed the forced landing, which resulted in substantial damage to the airplane. During the descent, he stated that he performed remedial actions in accordance with the checklist, and switched the fuel selector from the right tank position to the left tank. He added that the engine would surge during the descent but would not produce sufficient power to maintain altitude. In an interview with a Federal Aviation Administration (FAA) inspector, the pilot stated that he did not consult a checklist during the descent, but performed the emergency action items "by memory." In a telephone interview, a witness stated that he saw the airplane at low altitude near the IBM corporate campus and it appeared to be "in distress." He described the engine sound as surging between idle and "extremely high rpm." He said that the engine sounded as though it was "starving for fuel." According to FAA records, the airplane was manufactured in 1996. The most recent annual inspection was completed July 1, 2011, at 1,460.4 total aircraft hours. At the time of the accident, the airplane had accrued 1,503 total aircraft hours. The pilot held a private pilot certificate with ratings for airplane single engine land and instrument airplane. He reported 383.5 total hours of flight experience, of which 165.5 hours were in the accident airplane make and model. His most recent FAA third-class medical certificate was issued November 9, 2011. Examination of the airplane at the scene by FAA inspectors revealed no pre-impact mechanical anomalies. The fuel selector was found in a position between the left tank and right tank detents . A detailed examination by the inspectors at a recovery facility revealed continuity of the fuel system, unobstructed fuel lines and filters, and an operational fuel selector. The engine was removed from the airplane, and placed in a test cell on May 2, 2012. Prior to the test run, a borescope examination of the engine's cylinders revealed "normal" deposits and wear, and no anomalies. Theengine started immediately, accelerated smoothly, and ran continuously without interruption. The engine run revealed no anomalies that would have prevented normal operation and the production of rated power. A warning in the airplane manufacturer's Pilot's Operating Handbook stated: "POSITION [Fuel] SELECTOR IN DETENTS ONLY – NO FUEL FLOW TO ENGINE BETWEEN DETENTS"
Aircraft
- Registration
- N821SM
- Reported as
- Raytheon A36
- Category
- Airplane
- Serial number
- E-3031
- Airframe hours
- 1,503
- Engine
- Cont Motor IO-550 SERIES, 300 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Ehrenzeller Mark
- Registered owner
- Ehrenzeller Mark
- Last inspection
- Annual · July 1, 2011 · 43 hours before
- Departed
- TEB · Teterboro, NJ
- Destination
- OWD · Norwood, MA
- Flight plan
- IFR
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
- 38
- Injuries
- Minor
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 3, Without waivers/limitations
- Seat
- Left
- Flight hours
- 383 total · 165 in this make and model
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 160° at 9 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 4,000 ft broken
- Temperature
- 66 °F, dew point 46 °F
- Altimeter
- 29.95 inHg
- Observed at
- HPN, 9 nm away
Docket · 10
The files NTSB released with the investigation on March 22, 2013, on NTSB’s docket system: statements, records, photos and specialists’ reports. 17.7 MB in all.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.