Champion 7GCB N912CP

Summary

On 4 June 1998 at about 22:33 local time, a Champion 7GCB registered N912CP, operated by Garman, Steven, P., was involved in an accident near Hailey, Idaho, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

4 June 1998 at 22:33

Classification

Accident

Location

Hailey, Idaho, United States

Nearest airport

Friedman Memorial (SUN)

Coordinates

43.5703, -114.2093

Aircraft

Champion 7GCB

Registration

N912CP

Category

Airplane

Engines

1

Operator

Garman, Steven, P.

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Boise → Unknown

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

SEA98LA087

Nobody was injured.

The disconnection of the rear right-main brake pedal from the brake master cylinder, and the overloading of the right main landing gear. A factor was the oscillation of the tailwheel.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

The pilot, flying from the front seat, was aware of a tailwheel shimmy condition prior to the flight. Upon touchdown, the aircraft's tailwheel began to oscillate. Marks on the runway showed tailwheel tire scuffing from the touchdown area and beyond. A second solid scuff mark associated with the left wheel was observed as both scuff marks diverged left of the runway centerline. Post-crash examination revealed that the rear right brake-pedal had disconnected from the connecting rod to the forward right brake-pedal and the disconnection rendered the forward right brake-pedal unusable. The disconnection occurred at the rear right brake-pedal attach eye, and one separation surface was observed to be clean whereas the opposing side was dirty. Cracks were observed inside the attach eye radii, as well as the opposing end of the pedal. The right-main landing gear separated. Examination of the tailwheel assembly revealed that the hexagonal nut which holds the inner lock ring in place had become loose allowing the lock ring to shift. This allowed the two lock ring pins to shear, thus allowing the tailwheel to oscillate or 'shimmy' during roll.

Quoted verbatim from the NTSB record.