ATL07LA004

NTSB accident investigation · Piper PA-28R-180 · Alabaster, AL · October 7, 2006

Accident · No injuriesLimited investigationFinal report
Date
October 7, 2006, 13:00 local (18:00 UTC)
Place
Alabaster, AL
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N70SRPiper PA-28R-180
Weather
Visual (VMC) · Day
Status
Completed · report December 20, 2007
Report
Approved by Office Director
Parties
Birmingham FSDO
FAA report
20061007023069A
Case key
64698

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 jammed landing gear hydraulic motor shuttle valve.

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.

Main gear collapsedLanding - flare/touchdown
Landing gear,normal retraction/extension assembly - jammedCause

Analysis

The pilot stated that he was practicing in preparation for his commercial pilot certificate. On the initial takeoff, after raising the gear, the pilot noticed the gear in-transit light remained on. The pilot pulled the landing gear pump circuit breaker. When he reset the breaker, he did not see a movement on the amp meter. He said this was an indication that the pump was not running. Although the in-transit light remained on, the pilot stated that the gear was up and locked. The pilot continued on to the practice area to do some air work, then he returned to the airport to do some touch-and-go landings. The pilot stated that on the first landing the gear went down normally and he had three green lights. On the takeoff he said the gear would not go up and lock. He cycled the gear handle several times. The pilot stated he had three green lights and the gear in-transit light was still on. The pilot stated the light was on for the entire flight. He said that he made a normal touchdown, and the right main gear collapsed veering the airplane to the right, off the runway. Examination of the airplane by an FAA Inspector found the nose and right main landing gear collapsed and structural damage to the wing ribs at the right main landing gear attach point. The airplane was placed in a hangar and jacked up for a retraction test. The gear handle was placed in the up position and the gear raised normally and the in-transit light was not on when the gear was up and locked. When the gear handle was placed in the down position the hydraulic pump operated but the gear did not extend. The landing gear remained up and locked. Striking the pump with a hammer freed the shuttle valve and the gear operated normally. According to the FAA Inspector the gear would not extend normally without striking the shuttle valve with a hammer.

Factual narrative

On October 7, 2006, at 1300 central daylight time, a Piper PA-28R-180, N70SR, registered to Shelby Air LLC, operating as a 14 CFR Part 91 instructional flight, collapsed the right main landing gear during landing on runway 15 at the Shelby County Airport, in Alabaster, Alabama. Visual meteorological conditions prevailed, and no flight plan was filed. The airplane received substantial damage. The private pilot reported no injuries. The flight originated from Shelby County Airport on October 7, 2006, at 1200.

The pilot stated that he was practicing in preparation for his commercial pilot certificate. On the initial takeoff, after raising the gear, the pilot noticed the gear in-transit light remained on. The pilot pulled the landing gear pump circuit breaker. When he reset the breaker, he did not see a movement on the amp meter. He said this was an indication that the pump was not running. Although the in-transit light remained on, the pilot stated that the gear was up and locked. The pilot continued on to the practice area to do some air work, then he returned to the airport to do some touch-and-go landings. The pilot stated that on the first landing the gear went down normally and he had three green lights. On the take off he said the gear would not go up and lock. He cycled the gear handle several times. The pilot stated he had three green lights and the gear in-transit light was still on. The pilot stated the light was on for the entire flight. He said that he made a normal touch-down, and the right main gear collapsed veering the airplane to the right, off the runway, damaging the right wing, right main gear, and nose-wheel.

Examination of the airplane by an FAA Inspector found the nose and right main landing gear collapsed and structural damage to the wing ribs at the right main landing gear attach point. The airplane was placed in a hangar and jacked up for a retraction test. The gear handle was placed in the up position and the gear raised normally and the in transit light was not on when the gear was up and locked. When the gear handle was placed in the down position the hydraulic pump operated but the gear did not extend. The landing gear remained up and locked. Striking the pump with a hammer freed the shuttle valve and the gear operated normally. According to the FAA Inspector the gear would not extend normally without striking the shuttle valve with a hammer.

A completed NTSB Form 6120.1/2, Pilot/Operator Report, was not received from the pilot or aircraft operator.

Aircraft

Registration
N70SR
Reported as
Piper PA-28R-180
Category
Airplane
Serial number
28R-30122
Engine
Lycoming IO-360, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Milton Perry Sheppard
Registered owner
Shelby Air LLC
Airworthiness certificate
Standard, Normal
Departed
EET · Alabaster, AL
Destination
EET
Airport
KEET · Shelby County Airport, runway 15, 4,411 × 75 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
50
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Unknown
Seat
Left
Flight hours
300 total

Weather

Conditions
Visual (VMC) · Day
Wind
10° at 7 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 52 °F
Altimeter
30.15 inHg
Observed at
EET

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 N70SR · 1

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