20140305001819A

Accident · Substantial damage

FAA accident report · Cessna 172R · Jackson, TN · March 5, 2014

Date
March 5, 2014 · 10:33 local
Place
Jackson, TN
Phase of flight
Cruise/Level Flight
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N9417Z
NTSB investigation
NTSBERA14LA142
Reported as
Cessna 172R
Reported engine
Lycoming I0-360
People aboard
2
Fatal injuries
0
Other injuries
0
Pilot’s certificate
Private pilot
Pilot’s flight hours
210 total210 in this make and model30 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.

On March 5, 2014, aircraft N9417Z, a Cessna 172, departed on an IFR flight from mkl to ags. At 10:33 am, the mkl tower received an emergency call from the aircraft?s pilot stating that he lost oil pressure after departure and was returning to the airfield. The aircraft was unable to return to the airfield and landed on us highway 70. After landing, the aircraft?s right wing clipped roadway signs causing substantial damage. The right wing strut was broken causing the wing to collapse.

The right vacuum pump adapter assembly gasket, part number 68315, between the adapter assembly and the gearbox was leaking oil causing the loss of oil pressure. The aircraft maintenance logbook showed that March 4, 2014, the right vacuum pump was removed and replaced along with a new shaft seal and gasket. The gasket may have had a manufacturing defect or been over-torqued causing an oil leak.

As the FAA filed it

ON MARCH 5, 2014, AIRCRAFT N9417Z, A CESSNA 172, DEPARTED ON AN IFR FLIGHT FROM MKL TO AGS. AT 10:33 AM, THE MKL TOWER RECEIVED AN EMERGENCY CALL FROM THE AIRCRAFT?S PILOT STATING THAT HE LOST OIL PRESSURE AFTER DEPARTURE AND WAS RETURNING TO THE AIRFIELD. THE AIRCRAFT WAS UNABLE TO RETURN TO THE AIRFIELD AND LANDED ON US HIGHWAY 70. AFTER LANDING, THE AIRCRAFT?S RIGHT WING CLIPPED ROADWAY SIGNS CAUSING SUBSTANTIAL DAMAGE. THE RIGHT WING STRUT WAS BROKEN CAUSING THE WING TO COLLAPSE.

THE RIGHT VACUUM PUMP ADAPTER ASSEMBLY GASKET, PART NUMBER 68315, BETWEEN THE ADAPTER ASSEMBLY AND THE GEARBOX WAS LEAKING OIL CAUSING THE LOSS OF OIL PRESSURE. THE AIRCRAFT MAINTENANCE LOGBOOK SHOWED THAT MARCH 4, 2014, THE RIGHT VACUUM PUMP WAS REMOVED AND REPLACED ALONG WITH A NEW SHAFT SEAL AND GASKET. THE GASKET MAY HAVE HAD A MANUFACTURING DEFECT OR BEEN OVER-TORQUED CAUSING AN OIL LEAK.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

Other reports on N9417Z · 3

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