20150714010309A

Accident · Substantial damage

FAA accident report · Dafoe Gerald W TCOW SMITH CUB · Cascade, ID · July 14, 2015

Date: July 14, 2015 · 09:30 local
Place: Cascade, ID
Airport: Cascade
Phase of flight: Landing: Rollout
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N810GL
NTSB investigation: NTSBWPR15LA218
Reported as: Dafoe Gerald W Tcow Smith CUB
Reported engine: Amateur-built UNKNOWN ENG
People aboard: 2
Fatal injuries: 0
Other injuries: 0
Pilot’s certificates: Commercial pilot, flight instructor
Pilot’s flight hours: 4,015 total480 in this make and model30 in the last 90 days

N810GLRegistered now · Dafoe Gerald W TCOW SMITH CUBS/N TC0609002 · Built 2009 Airframe modelDafoe Gerald W TCOW SMITH CUB Engine modelAmateur-built UNKNOWN ENG

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.

During landing rollout, the PIC applied both brakes simultaneously. The left brake grabbed but the right brake did not produce any braking action. This caused the aircraft to ground loop to the left. During the ground loop, the right wing contacted the ground, causing substantial damage. The right main gear collapsed.

As the FAA filed it

DURING LANDING ROLLOUT, THE PIC APPLIED BOTH BRAKES SIMULTANEOUSLY. THE LEFT BRAKE GRABBED BUT THE RIGHT BRAKE DID NOT PRODUCE ANY BRAKING ACTION. THIS CAUSED THE AIRCRAFT TO GROUND LOOP TO THE LEFT. DURING THE GROUND LOOP, THE RIGHT WING CONTACTED THE GROUND, CAUSING SUBSTANTIAL DAMAGE. THE RIGHT MAIN GEAR COLLAPSED.

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 WPR15LA218Accident · No injuriesLimited investigationFinal reportCascade, IDA gouge in the right brake master cylinder piston O-ring, which resulted in a loss of brake pressure and reduced effectiveness after landing. Contributing to the accident was the pilot’s decision to operate the airplane with an ongoing brake issue.Jul 14, 2015 · Substantial damage