19990223036299I

Incident · Substantial damage

FAA incident report · Piper PA-30 · Philadelphia, PA · February 23, 1999

Date
February 23, 1999 · 12:11 local
Place
Philadelphia, PA
Airport
Northeast Philadelphia
Phase of flight
Fcd/Prec Ldg From Cruise
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N9NY
Reported as
Piper PA30
Reported engine
Lycoming IO320B1A
People aboard
1
Fatal injuries
0
Pilot’s flight hours
2,400 total1,300 in this make and model20 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) Update: 07/02/99: subsequent landing gear retraction/extension checks in both normal and emergency mode of operation were conducted. During the checks, the landing gear operated flawlessly, during repeated attempts. It was only when a simulated air load was placed on the main gear that the landing gear circuit breaker tripped and the landing gear became jammed. Further investigation revealed internal binding of both main gear conduit push-pull cable assemblies due to internal fraying (conduit p/n: 455 180). This occurred only during reverse loading of the gear while simulating in flight air loads. Records indicate that the conduit assemblies were original components installed since the time of manufacturer (34 years, 1965). AEA-FSDO-17 has developed a safety recommendation to AAI-100 relative to this investigation to prevent reoccurrence. An FAA form 8010-4 m or d has been sent to the FAA safety data branch in Oklahoma city.

As the FAA filed it

(-23) UPDATE: 07/02/99: SUBSEQUENT LANDING GEAR RETRACTION/EXTENSION CHECKS IN BOTH NORMAL AND EMERGENCY MODE OF OPERATION WERE CONDUCTED. DURING THE CHECKS, THE LANDING GEAR OPERATED FLAWLESSLY, DURING REPEATED ATTEMPTS. IT WAS ONLY WHEN A SIMULATED AIR LOAD WAS PLACED ON THE MAIN GEAR THAT THE LANDING GEAR CIRCUIT BREAKER TRIPPED AND THE LANDING GEAR BECAME JAMMED. FURTHER INVESTIGATION REVEALED INTERNAL BINDING OF BOTH MAIN GEAR CONDUIT PUSH-PULL CABLE ASSEMBLIES DUE TO INTERNAL FRAYING (CONDUIT P/N: 455 180). THIS OCCURRED ONLY DURING REVERSE LOADING OF THE GEAR WHILE SIMULATING IN FLIGHT AIR LOADS. RECORDS INDICATE THAT THE CONDUIT ASSEMBLIES WERE ORIGINAL COMPONENTS INSTALLED SINCE THE TIME OF MANUFACTURER (34 YEARS, 1965). AEA-FSDO-17 HAS DEVELOPED A SAFETY RECOMMENDATION TO AAI-100 RELATIVE TO THIS INVESTIGATION TO PREVENT REOCCURRENCE. AN FAA FORM 8010-4 M OR D HAS BEEN SENT TO THE FAA SAFETY DATA BRANCH IN OKLAHOMA CITY.