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19980122000709A

Accident · Substantial damage
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FAA accident report · Cessna 340A · Groveland, CA · January 22, 1998

FAA Aviation Safety Information Portal

© OpenStreetMap
Date
January 22, 1998 · 17:30 local
Place
Groveland, CA
Airport
Pine Mountain Lake Airport
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N41NR
NTSB investigation
NTSBLAX98LA081
Reported as
Cessna 340A
Reported engine
Continental TSIO520NB
People aboard
2
Fatal injuries
0
Pilot’s flight hours
3,608 total218 in this make and model16 in the last 90 days
N41NRRegistered now · Cessna 340AS/N 340A0488Airframe modelCessna 340AEngine modelContinental TSIO-520 seriesReciprocating

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.

Left brake failed landing. Ran into shallow ditch. Hit pavement edge on taxiway. Folded nose gear. Brake line broke (.4)the pilot stated that after touchdown the left brake failed. Examination of the aircraft revealed that flexible duct tubing showed evidence of cracking. Further examination revealed that there would have been an insufficient amount of fluid in the left main landing gear brake system due to a leak, which would have restricted the operation of the left brake. The pilot reported that per the aircraft logbook, the brake lines had never been replaced. Documents from the manufacturer state the the pressurization system must be inspected every 200 hours or every year for plumbing condition, security, and loose connections. The brake system, per the manufacturer, must also be inspected every 200 hours or every year for leaks, hoses for bulges, and deterioration. The last annual maintenance performed included an inspection of the brake lines without removal of the structural sheet metal that overlies the pressurization system. (-23) failure of left main landing gear brake system.

As the FAA filed it

LEFT BRAKE FAILED LANDING. RAN INTO SHALLOW DITCH. HIT PAVEMENT EDGE ON TAXIWAY. FOLDED NOSE GEAR. BRAKE LINE BROKE (.4)THE PILOT STATED THAT AFTER TOUCHDOWN THE LEFT BRAKE FAILED. EXAMINATION OF THE AIRCRAFT REVEALED THAT FLEXIBLE DUCT TUBING SHOWED EVIDENCE OF CRACKING. FURTHER EXAMINATION REVEALED THAT THERE WOULD HAVE BEEN AN INSUFFICIENT AMOUNT OF FLUID IN THE LEFT MAIN LANDING GEAR BRAKE SYSTEM DUE TO A LEAK, WHICH WOULD HAVE RESTRICTED THE OPERATION OF THE LEFT BRAKE. THE PILOT REPORTED THAT PER THE AIRCRAFT LOGBOOK, THE BRAKE LINES HAD NEVER BEEN REPLACED. DOCUMENTS FROM THE MANUFACTURER STATE THE THE PRESSURIZATION SYSTEM MUST BE INSPECTED EVERY 200 HOURS OR EVERY YEAR FOR PLUMBING CONDITION, SECURITY, AND LOOSE CONNECTIONS. THE BRAKE SYSTEM, PER THE MANUFACTURER, MUST ALSO BE INSPECTED EVERY 200 HOURS OR EVERY YEAR FOR LEAKS, HOSES FOR BULGES, AND DETERIORATION. THE LAST ANNUAL MAINTENANCE PERFORMED INCLUDED AN INSPECTION OF THE BRAKE LINES WITHOUT REMOVAL OF THE STRUCTURAL SHEET METAL THAT OVERLIES THE PRESSURIZATION SYSTEM. (-23) FAILURE OF LEFT MAIN LANDING GEAR BRAKE SYSTEM.

NTSB investigation

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

NTSB LAX98LA081Accident · No injuriesLimited investigationFinal reportGroveland, CAFailure of the brake line as a result of inadequate maintenance.Jan 23, 1998 · Substantial damage

Other reports on N41NR · 1

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

Incident 19960725023649IGround Taxi, Other Airplane · Rapid City, SDNarrative: left propeller struck taxiway light while pilot was maneuvering aircraft.Jul 25, 1996 · Minor damage