LAX98LA176

NTSB accident investigation · Piper PA-44-180 · Fresno, CA · May 21, 1998

Accident · No injuriesLimited investigationFinal report
Date
May 20, 1998, 17:15 local (May 21, 1998, 00:15 UTC)
Place
Fresno, CA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N2153BPiper PA-44-180
Weather
Visual (VMC) · Day
Status
Completed · report March 31, 2000
Report
Approved by Office Director
FAA report
19980520011259A
Case key
30101

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 dual's student improper flare that led to the right main landing gear collapsing. A related factor in the accident was the instructor pilot's inadequate supervision.

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.

Hard landingLanding - flare/touchdown
Flare - improperPilot in commandCause
Supervision - inadequatePilot in command(cfi)Factor
Landing gear,main gear - collapsed

Analysis

After practicing maneuvers and takeoffs and landings at an alternate airport, the dual instructional flight was returning to base to terminate the flight. In the pattern the flight instructor simulated an engine failure, with the student recovering and making a full stop landing. On the landing rollout, the aircraft veered to the right. The instructor applied full left rudder, with the aircraft continuing to the right. The instructor brought the aircraft to a stop on the runway, then requested and received permission from the tower to exit the aircraft and check the landing gear. The instructor noted that the right main landing gear was broken. Upon attempting to re-enter the aircraft, the right main landing gear collapsed, and the right wing struck the ground. The instructor and student submitted written statements that stated the landing was not hard. In their interviews; however, they both stated that the landing was hard and the student stated that she was not sure if the aircraft had been properly aligned with the runway. The aircraft and landing gear mechanism were examined at the accident location. The right landing gear had separated from the wing with the front and rear attach fittings broken, exhibiting outboard loading. The landing gear collapsed towards the fuselage. No further mechanical anomalies were noted.

Factual narrative

On May 20, 1998, at 1715 hours Pacific daylight time, a Piper PA-44-180, N2153B, collapsed the main landing gear after landing at the Fresno, California, airport. The aircraft, operated by Mazzeis Flying Service under the provisions of 14 CFR Part 91, sustained substantial damage. The flight instructor and private pilot were not injured. Visual meteorological conditions existed for the local instructional flight and no flight plan was filed. The flight originated from the Fresno airport at 1700 the day of the accident.

In the instructor pilot's written statement to the Safety Board he reported that the purpose of the flight was to practice maneuvers in the practice area, and takeoffs and landings at an alternate airport. After performing the maneuvers, they flew to Chandler airport to practice takeoffs and landings. The instructor stated that the first landing was conducted with both engines operating. On the second approach for landing, he simulated a single engine approach. He stated that the approach was high and the student performed a go-around. On the next landing, he again simulated a single engine approach with a successful full stop landing. The instructor stated that both landings were "good."

The instructor reported that they returned to the Fresno airport to terminate the flight. In the pattern he simulated an engine failure, and the student recovered and continued the approach and subsequent landing. After touchdown the aircraft started to move right of centerline. The instructor reported that he applied full left rudder to counteract the movement to the right. He stated that he stopped the aircraft on the runway and informed the tower that he thought they had a flat tire and he would like to get out and check. The tower approved his request and the instructor exited the aircraft. The instructor reported that the right main landing gear was broken, and he requested that his student shut down the engines. When he attempted to reenter the aircraft, the right main landing gear collapsed and the right wing struck the ground.

In the instructor pilot's interview with a Federal Aviation Administration (FAA) inspector, on May 21, 1998, he stated that he had simulated an engine failure on the approach to Fresno and during the landing had a "moderately hard landing." The FAA inspector received an amended written statement from the instructor with no mention of a hard landing.

The same FAA inspector interviewed the student pilot on May 21, 1998. She stated that the landing at the Fresno airport was hard and she was not sure if the aircraft was aligned properly with the runway during the landing sequence. The FAA inspector requested a written statement from the student pilot. In her written statement she stated that the last landing was not hard and that the aircraft was aligned with the runway during the landing sequence.

The FAA inspected the aircraft and landing gear mechanism at the accident location. The FAA noted that the right landing gear had separated from the wing and that the front and rear attach fittings on the landing gear were broken exhibiting outboard stress. The FAA inspector reported that the landing gear collapsed towards the fuselage with rub marks located on the inboard portion of the tire. No further mechanical anomalies were noted.

Aircraft

Registration
N2153B
Reported as
Piper PA-44-180
Category
Airplane
Serial number
44-7995099
Airframe hours
6,865
Engine
Lycoming IO-360-E1A6D, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
Mazzeis Flying Service
Registered owner
John & Susan Bryner
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 13, 1998 · 32 hours before
Departed
FAT
Airport
FAT · Fresno Yosemite Intl, runway 29L, 7,206 × 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
24
Certificates
Commercial, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
1,221 total · 149 in this make and model · 1,115 as pilot in command · 90 in the last 90 days · 42 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 14 knots, gusting 22
Visibility
10 statute miles
Lowest ceiling
None
Temperature
45 °F, dew point 46 °F
Altimeter
29.00 inHg
Observed at
FAT

FAA reports on this event · 1

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