CHI87FA058

NTSB accident investigation · Piper PA-31T · Merrillville, IN · December 30, 1986

Accident · FatalField investigationFinal report
Date
December 30, 1986, 02:54 local (07:54 UTC)
Place
Merrillville, IN
Injuries
1 fatal
Damage
Destroyed
Phase of flight
Enroute
Aircraft
N74NLPiper PA-31T
Weather
Visual (VMC) · Night/dark
Status
Completed · report August 11, 1988
Report
Approved by Office Director
FAA report
19861230069649A
Case key
13627

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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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/malfDescent - normal
Engine assembly,bearing - distortedFactor
Engine assembly,bearing - binding(mechanical)Factor
Emergency procedure - inadequatePilot in command
Airframe/component/system failure/malfunctionDescent - normal
Electrical system - failure,totalFactor
Lack of familiarity with aircraftPilot in commandFactor
In flight collision with objectUnknown
Proper altitude - not maintainedPilot in commandCause
Flight/nav instruments - failure,partialFactor
Minimum descent altitude - not maintainedPilot in commandFactor
Anxiety/apprehensionPilot in command
Light condition - dark nightFactor
Descent - misjudgedPilot in commandCause
In flight collision with terrain/waterDescent - uncontrolled

Analysis

The acft was enroute to the chicago midway arpt. While letting down to 16000 ft the pilot reported he was shutting down the right eng. ARTCC cleared the acft to 5000 ft. ten minutes later ARTCC lost radio transponder and mode c contact. 15 minutes later the acft descended out of the 1800 ft overcast and struck a 170 ft utility tower at the 150 ft level. The acft then ground impacted and burned. Investigation revealed that the rt engine had a bearing failure due to lack of lubrication.

Aircraft

Registration
N74NL
Reported as
Piper PA-31T
Category
Airplane
Serial number
7720010
Airframe hours
6,888
Engine
P&W PT-6A-28, 620 horsepower, reciprocating
Damage
Destroyed
Fire
On-Ground
Flight
Part 135
Registered owner
Wright Int'L Express Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 7, 1986 · 31 hours before
Departed
SDF · Louisville, KY
Destination
MDW · Chicago, IL
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
36
Certificates
Private, Commercial
Airplane ratings
Multi-engine land, Single-engine land, Multi-engine sea, Single-engine sea
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Toxicology
Performed
Flight hours
2,170 total · 140 in this make and model · 2,110 as pilot in command · 150 in the last 90 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Night/dark
Wind
330° at 10 knots
Visibility
7 statute miles
Lowest ceiling
1,100 ft broken
Temperature
30 °F, dew point 27 °F
Altimeter
30.00 inHg
Observed at
MDW, 28 nm away

FAA reports on this event · 1

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