WPR22LA040

NTSB accident investigation · Piper PA-28R-200 · Boulder City, NV · November 14, 2021

Accident · No injuriesClass 3 · LimitedFinal report
Date
November 14, 2021, 14:23 local (22:23 UTC)
Place
Boulder City, NV
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N5057SPiper PA-28R-200
Defining event
Approach-VFR pattern final: Sys/Comp malf/fail (non-power)
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 3
NTSB office
Western Pacific Region
Parties
FAA-FSDO, Piper Aircraft
Case key
104273

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

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

The installation of an improper right main landing gear door rod-end bolt, which resulted in the right main landing gear not extending during landing.

Findings · 1

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings.

Analysis

During an approach to the airport, the right main landing gear would not extend. The pilot cycled the landing gear and made several abrupt, high-G maneuvers to try and free the right main landing gear from its retracted position. Despite his actions, the right main landing gear would not extend. During the landing, the airplane sustained substantial damage to the aft fuselage and right wing. During the postaccident examination of the airplane, the right main landing gear wheel well exhibited mechanical damage consistent with contact from the threaded end of the right gear door rod-end bolt. The right main landing gear door rod-end bolt had about 4 additional threads than the bolt used on the left main landing gear. The bolt was removed, and its length was 1-4/25 inch, which was about 1/8 inch longer than the correctly installed bolt, which measured 1-1/32 inch. It is likely that during the accident flight, the right main landing gear could not fully extend due to the right gear door rod-end bolt positioning itself on the inside of the landing gear wheel well, preventing the landing gear from extending.

Factual narrative

The factual narrative445 words

On November 14, 2021, about 1423 Pacific standard time, a Piper PA-28R-200 airplane, N5057S, was substantially damaged when it was involved in an accident at the Boulder City Municipal Airport (BVU), Boulder City, Nevada. The pilot and passenger were not injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The pilot reported that after receiving the airplane from the paint shop, he conducted two takeoffs and landings in the local traffic pattern to check that the landing gear retracted and extended properly. Once the maintenance check flight was completed, he and his passenger departed on the accident flight to BVU. During the approach to BVU, the right main landing gear would not extend. The pilot cycled the landing gear and made several abrupt, high-G maneuvers to try and free the right main landing gear from its retracted position. Despite his actions, the right main landing gear would not extend. The pilot decided to land with the left main landing gear and the nose landing gear extended. As the airplane slowed during the landing roll, the right wing dropped to the runway surface and the airplane veered off the right side of the runway. The airplane came to rest over a small ditch and sustained substantial damage to the aft fuselage and right wing. The pilot reported that the right main landing gear was retracted, and the landing gear door was opened about 1 to 2 inches. He said that he positioned himself in the ditch below the landing gear and pulled hard on the door to extend the gear. After a couple of attempts, the landing gear suddenly dropped down into place. During a postaccident examination, the airplane was lifted up on jacks and the airplane’s landing gear was examined. The emergency gear extension functioned normally, and both the nose landing gear and main gear fell into the down and locked position. Mechanical damage was found on the right main landing gear wheel well near the right gear door rod-end bolt travel area. The mechanical damage was consistent with the threaded end portion of the bolt. The right main landing gear door rod-end bolt had about 4 additional threads than the bolt used on the left main landing gear. The bolt was removed, and its length was 1-4/25 inch, which was about 1/8 inch longer than the correctly installed bolt, which measured 1-1/32 inch. Figure 1-Landing gear linkage and wheel well damage. The paint shop reported that the gear doors were never removed from the landing gear structure during the painting process. They reported that on this type of aircraft they do not remove the gear doors.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident.

Aircraft

Registration
N5057S
Reported as
Piper PA-28R-200
Category
Airplane
Serial number
28R-35784
Built
1970
Airframe hours
5,700
Engine
Lycoming IO-360, 200 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · December 1, 2020
Departed
SMX · Santa Maria, CA
Destination
Same as departure
Flight plan
IFR
Airport
BVU · Boulder City Muni, runway 27, 5,103 × 75 ft, asphalt
Equipment
ADS-B

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
67
Injuries
None
Certificates
Flight engineer, Airline transport, Flight instructor, Private, Commercial, Military
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
April 19, 2021
Seat
Left
Restraint
Lap only
Flight hours
18,000 total · 30 in this make and model · 6,000 as pilot in command · 60 in the last 90 days · 30 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 4 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
62 °F, dew point 15 °F
Altimeter
29.02 inHg
Icing
Unknown
Turbulence
Unknown
Observed at
KBVU
METAR
METAR KBVU 142215Z AUTO 05004KT 10SM CLR 26/M03 A3015 RMK AO2

Docket · 8

The files NTSB released with the investigation on January 4, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 12.0 MB in all.

Other investigations on N5057S · 1

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