MIA98LA165

NTSB accident investigation · Cessna 172RG · Roberta, GA · May 17, 1998

Accident · No injuriesLimited investigationFinal report
Date
May 17, 1998, 14:16 local (18:16 UTC)
Place
Roberta, GA
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N6562VCessna 172RG
Weather
Visual (VMC) · Day
Status
Completed · report December 1, 1999
Report
Approved by Office Director
FAA report
19980517016169A
Case key
38522

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 NTSB’s determination of the probable cause, and any contributing factors.

The pilot's inadequate compliance with the emergency procedures for his failure to completely pump the main landing gear into the down and locked position. Contributing to the accident was the reported loss of electrical power for undetermined reasons.

Analysis

The pilot stated that during the flight, the electrical system failed. He attempted to restore electrical power using the emergency procedures but was unable. He pumped the landing gear down using 30 pumps of the handle to the point where he heard and it felt like the landing gear was extended. He elected to land at a nearby grass runway and the airplane touched down about 1,800 feet down the 3,700 foot runway. During the landing roll the right main landing gear collapsed and the airplane veered off the right side of the runway. Shortly after the accident the master switch was turned on and power was available to raise and lower the flaps. Additionally, during repair of the airplane following the accident no maintenance was performed or required to the electrical system or to the right main landing gear assembly. According to the emergency procedures section of the airplane information manual, the emergency hand pump is to be pumped until resistance is heavy-about 35 cycles.

Factual narrative

On May 17, 1998, about 1416 eastern daylight time, a Cessna 172RG, N6562V, registered to Aviation Atlanta, Inc., experienced collapse of the right main landing gear during the landing roll at a private airstrip in Roberta, Georgia. Visual meteorological conditions prevailed at the time and no flight plan was filed for the 14 CFR Part 91 personal flight. The airplane was substantially damaged and the commercial-rated pilot and two passengers were not injured. The flight originated about 1245, from the DeKalb-Peachtree Airport, Chamblee, Georgia.

The pilot stated that during the flight while near Roberta, Georgia, he noted "dimming" of the radio frequency lights and also initially stated that the ammeter indicated 0. He executed the electrical malfunction procedures and shortly after that, experienced complete electrical failure. The emergency procedures were not successful in re-establishing electrical power. He noted the airstrip and elected to land to the east on the 3,700-foot grass runway, flaps up. He pumped the landing gear down using about 30 pumps of the handle until he heard and it felt like the landing gear was extended. The touchdown point was determined to be about 1,800 feet down the runway and during the landing roll, the right main landing gear collapsed. The airplane veered off the right side of the runway and came to rest upright.

According to the airstrip owner's son, on the day of and shortly after the accident, his father turned on the master switch and electrical power was available. He did this to check the fuel gauges and also raised and lowered the flaps. According to personnel from the facility that performed the structural repairs to the airplane, no maintenance was performed or required of the electrical or landing gear system. Also, there were no damaged components in the right main landing gear assembly.

According to the emergency procedures section of the airplane information manual, the emergency hand pump is to be pumped until the resistance becomes heavy; about 35 cycles.

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 - undetermined
Gear collapsedLanding - roll
Emergency procedure - inadequatePilot in commandCause
Precautionary landing - performedPilot in command

Aircraft

Registration
N6562V
Reported as
Cessna 172RG
Category
Airplane
Serial number
172RG0775
Airframe hours
2,011
Engine
Lycoming O-360-F1A6, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Aviation Atlanta, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 12, 1998 · 20 hours before
Departed
PDK · Chamblee, GA
Destination
ACJ · Americus, GA
Airport
0GA9 · Roberta Industrial, runway 7, 3,700 × ft, grass/turf

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
62
Certificates
Airline transport, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
10,000 total · 50 in this make and model · 6,000 as pilot in command · 7 in the last 90 days · 3 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 6 knots
Visibility
6 statute miles
Lowest ceiling
None
Temperature
90 °F, dew point 64 °F
Altimeter
30.00 inHg
Observed at
MCN, 19 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 N6562V · 2

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