CHI95LA283

NTSB accident investigation · Piper PA-31 · Ironwood, MI · August 14, 1995

Accident · No injuriesLimited investigationFinal report
Date
August 14, 1995, 05:20 local (09:20 UTC)
Place
Ironwood, MI
Injuries
7 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N9123YPiper PA-31
Weather
Visual (VMC) · Night/dark
Status
Completed · report March 21, 1996
Report
Approved by Office Director
FAA report
19950814030469A
Case key
10000

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

the pilot's failure to maintain control of the airplane during the aborted takeoff. A factor was the partial loss of engine power for an undetermined reason.

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.

Loss of engine power(partial) - mech failure/malfTakeoff - initial climb
1 engine
Reason for occurrence undeterminedFactor
Loss of control - in flightTakeoff - aborted
Aircraft control - not maintainedPilot in commandCause
On ground/water encounter with terrain/waterTakeoff - aborted

Analysis

The pilot reported that he conducted a normal takeoff, and the left engine lost power when the airplane was at approximately 25 feet above the runway. He 'lowered the nose, pulled the power, and landed straight ahead.' The airplane landed left of the runway and slid through a drainage ditch. Examination revealed no evidence of preimpact airframe malfunction. The engine was tested in the 'as received condition' and produced 85 percent of the rated power.

Factual narrative

On August 14, 1995, at 0520 central daylight time, a Piper PA-31, N9123Y, operated by G&W Aviation, Inc., sustained substantial damage when it departed the runway and impacted terrain during an aborted takeoff in Iron Mountain, Michigan. The commercial pilot and six passengers reported no injuries. The personal, 14 CFR Part 91 flight was planned to Chicago, Illinois. Visual meteorological conditions prevailed and an IFR flight plan was filed.

In his written statement, the pilot reported that he conducted a normal takeoff and the number one engine lost power when the airplane was at approximately 25 feet above the runway. He "lowered the nose, pulled the power, and landed straight ahead." The airplane landed left of the runway and slid through a drainage ditch. The nose and left main landing gear collapsed. The airplane sustained substantial damage to the left wing.

The wreckage was examined by a Federal Aviation Administration (FAA) inspector who reported no evidence of preimpact airframe or engine malfunction. Both propellers exhibited rotational damage.

When tested, the fuel system provided fuel to both engines at the firewall.

The number one engine was examined and tested at Textron Lycoming, in Williamsport, Pennsylvania, on October 19, 1995. The intake manifold contained an abraded penetration approximately 1.5 inches high by 1/8 inch wide in the rear left corner, underneath the rear baffling. A significant amount of particulate ferrous metal was recovered from the oil filter. No other mechanical malfunctions were noted. A test club was installed and the engine was tested in a production test cell in the "as received condition", except for the replacement of the engine oil and oil filter. The engine operated normally during the test run and produced 85 percent of the rated power.

The pilot operating handbook (POH) for the PA-31-310 specifies for a normal takeoff "At 90 MPH, CAS, rotate the aircraft and allow it to fly off." The limitations section of the POH specifies a minimum control speed of 85 miles per hour.

Aircraft

Registration
N9123Y
Reported as
Piper PA-31
Category
Airplane
Serial number
31-163
Airframe hours
7,301
Engine
Lycoming TIO-540-A1A, 310 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
G & W Aviation
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 27, 1995 · 102 hours before
Destination
PEK · Chicago, IL
Flight plan
IFR
Airport
IWD · Gogebic County, runway 27, 6,501 × 150 ft, asphalt

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
27
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,161 total · 120 in this make and model · 1,075 as pilot in command · 226 in the last 90 days · 65 in the last 30 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
Calm
Visibility
5 statute miles
Lowest ceiling
1,000 ft overcast
Temperature
84 °F
Altimeter
29.00 inHg

FAA reports on this event · 1

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