ATL93LA049

NTSB accident investigation · Piper PA-30 · Crossville, TN · January 2, 1993

Accident · No injuriesLimited investigationFinal report
Date
January 2, 1993, 17:00 local (23:00 UTC)
Place
Crossville, TN
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N7712YPiper PA-30
Weather
Visual (VMC) · Dusk
Status
Completed · report October 25, 1993
Report
Approved by Office Director
FAA report
19930102000139A
Case key
8721

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 follow checklist procedures in that he did not utilize the alternate gear extension method when electrical power was lost. A factor was his failure to follow the checklist when he failed to turn on the generators prior to flight, which resulted in electrical failure.

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.

Airframe/component/system failure/malfunctionCruise - normal
Electrical system - loss,totalFactor
Checklist - not followedPilot in commandFactor
Generator - not usedPilot in commandFactor
Gear not extendedLanding
Checklist - not followedPilot in commandCause
Gear extension - improper use ofPilot in commandCause

Analysis

About 30 minutes into the local flight, the private pilot reported that total electrical power was lost. He could not lower the flaps, and when he lowered the gear handle, no greens lights illuminated. He elected to raise the gear handle and land. The aircraft was structurally damaged during the landing. When the aircraft was removed from the runway, an FBO employee lowered the gear handle, and the gear extended and locked. He then turned on the master switch, and observed 3 green gear down lights illuminated. The pilot reported that he did not attempt to use the manual alternate gear extension method. The pilot also reported that the loss of electrical power could have resulted from his failure to turn on the generators during the flight.

Aircraft

Registration
N7712Y
Reported as
Piper PA-30
Category
Airplane
Serial number
30-801
Airframe hours
2,765
Engine
Lycoming IO-320-B1A, 160 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Upchurch, Cornell P.
Registered owner
Upchurch, Cornell P.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · October 30, 1992 · 3 hours before
Departed
CSV
Destination
CSV
Airport
CSV · Crossville Memorial, runway 8, 5,418 × 100 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
65
Certificate
Private
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
3,000 total · 20 in this make and model · 2,900 as pilot in command

Weather

Conditions
Visual (VMC) · Dusk
Wind
150° at 6 knots
Visibility
12 statute miles
Lowest ceiling
3,500 ft broken
Temperature
54 °F, dew point 21 °F
Altimeter
30.00 inHg
Observed at
CSV, 1 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.

Other investigations on N7712Y · 1

Matched to the same aircraft by N-number and date.