20160122006369A

Accident · Substantial damage

FAA accident report · Piper PA-31P · Denton, TX · January 22, 2016

Date
January 22, 2016 · 16:30 local
Place
Denton, TX
Airport
Denton Airport
Phase of flight
Cruise/Level Flight
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N997DN
NTSB investigation
NTSBCEN16LA102
Reported as
Piper PA-31P
People aboard
1
Fatal injuries
0
Other injuries
1
Pilot’s certificates
Commercial pilot, flight instructor
Pilot’s flight hours
13,300 total127 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

The VFR maintenance test flight was the first flight after an annual inspection, prior to the inspection the aircraft was purchased from Canada. The airman revealed the aircraft did not fly for a period of time in Canada prior to purchase.

On the day of the accident the airman found two discrepancies during engine run-up. The cabin pressurization door seal was inoperative and the fuel boost pumps caused the engine to run rough when in the on position. The airman chose to ?pull? The circuit breakers on both fuel boost pumps to turn them off. Departing Denton municipal airport (kdto) to bishop airport (76T) at a cruise altitude of 2000 feet the airman did not experience any abnormalities along the 13 NM flight. The airman chose 76T to practice a low approach and exercise aircraft systems. As the aircraft pitched up during the go-around the right engine began to make a ?popping? Sound. When the aircraft leveled off the right engine began to work normally. The airman departed 76T direct to kdto. Approximately 6 NM from kdto the right engine began to make ?popping? Sounds. The airman set mixtures, props and throttles to the full forward position, verified the fuel selector was set to the inboard tanks and pushed in the fuel boost pump circuit breakers. A short time later the left engine quit abruptly. The airman selected to land in the direction of the flight path rather than into the relative wind. The airman selected a field with high tension power lines during the emergency. Prior to touchdown the landing gear was selected down. The aircraft impacted the ground, hit two fences and came to a stop under a large high power tension line.

Inspection of the accident site revealed impact damage to engine nacelles, propellers, and landing gear. The propellers were bent in the rearward direction, the nose and right main gear had separated on impact while the left main remained bent under the aircraft. The smell of fuel was around the aircraft however the level of fuel could not be determined at the accident site.

As the FAA filed it

THE VFR MAINTENANCE TEST FLIGHT WAS THE FIRST FLIGHT AFTER AN ANNUAL INSPECTION, PRIOR TO THE INSPECTION THE AIRCRAFT WAS PURCHASED FROM CANADA. THE AIRMAN REVEALED THE AIRCRAFT DID NOT FLY FOR A PERIOD OF TIME IN CANADA PRIOR TO PURCHASE.

ON THE DAY OF THE ACCIDENT THE AIRMAN FOUND TWO DISCREPANCIES DURING ENGINE RUN-UP. THE CABIN PRESSURIZATION DOOR SEAL WAS INOPERATIVE AND THE FUEL BOOST PUMPS CAUSED THE ENGINE TO RUN ROUGH WHEN IN THE ON POSITION. THE AIRMAN CHOSE TO ?PULL? THE CIRCUIT BREAKERS ON BOTH FUEL BOOST PUMPS TO TURN THEM OFF. DEPARTING DENTON MUNICIPAL AIRPORT (KDTO) TO BISHOP AIRPORT (76T) AT A CRUISE ALTITUDE OF 2000 FEET THE AIRMAN DID NOT EXPERIENCE ANY ABNORMALITIES ALONG THE 13 NM FLIGHT. THE AIRMAN CHOSE 76T TO PRACTICE A LOW APPROACH AND EXERCISE AIRCRAFT SYSTEMS. AS THE AIRCRAFT PITCHED UP DURING THE GO-AROUND THE RIGHT ENGINE BEGAN TO MAKE A ?POPPING? SOUND. WHEN THE AIRCRAFT LEVELED OFF THE RIGHT ENGINE BEGAN TO WORK NORMALLY. THE AIRMAN DEPARTED 76T DIRECT TO KDTO. APPROXIMATELY 6 NM FROM KDTO THE RIGHT ENGINE BEGAN TO MAKE ?POPPING? SOUNDS. THE AIRMAN SET MIXTURES, PROPS AND THROTTLES TO THE FULL FORWARD POSITION, VERIFIED THE FUEL SELECTOR WAS SET TO THE INBOARD TANKS AND PUSHED IN THE FUEL BOOST PUMP CIRCUIT BREAKERS. A SHORT TIME LATER THE LEFT ENGINE QUIT ABRUPTLY. THE AIRMAN SELECTED TO LAND IN THE DIRECTION OF THE FLIGHT PATH RATHER THAN INTO THE RELATIVE WIND. THE AIRMAN SELECTED A FIELD WITH HIGH TENSION POWER LINES DURING THE EMERGENCY. PRIOR TO TOUCHDOWN THE LANDING GEAR WAS SELECTED DOWN. THE AIRCRAFT IMPACTED THE GROUND, HIT TWO FENCES AND CAME TO A STOP UNDER A LARGE HIGH POWER TENSION LINE.

INSPECTION OF THE ACCIDENT SITE REVEALED IMPACT DAMAGE TO ENGINE NACELLES, PROPELLERS, AND LANDING GEAR. THE PROPELLERS WERE BENT IN THE REARWARD DIRECTION, THE NOSE AND RIGHT MAIN GEAR HAD SEPARATED ON IMPACT WHILE THE LEFT MAIN REMAINED BENT UNDER THE AIRCRAFT. THE SMELL OF FUEL WAS AROUND THE AIRCRAFT HOWEVER THE LEVEL OF FUEL COULD NOT BE DETERMINED AT THE ACCIDENT SITE.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.