LAX07CA161

NTSB accident investigation · Aeronca 11AC · Glendale, AZ · May 12, 2007

Accident · No injuriesData collectionFinal report
Date
May 12, 2007, 06:45 local (13:45 UTC)
Place
Glendale, AZ
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N85835Aeronca 11AC
Weather
Visual (VMC) · Day
Status
Completed · report July 25, 2007
Report
Approved by Office Director
Parties
Federal Aviation Administration
FAA report
20070512013039A
Case key
65775

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The private pilot's unstabilized approach and failure to maintain directional control during the landing roll, which resulted in a ground loop. Also causal was the instructor's inadequate supervision and failure to take remedial action.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of control - on ground/waterLanding - flare/touchdown
PerformedDual studentCause
Directional control - not maintainedDual studentCause
Supervision - inadequatePilot in command(cfi)Cause
Remedial action - not performedPilot in command(cfi)Cause
Ground loop/swerve - encounteredDual studentCause
On ground/water collision with objectLanding - roll
Object - airport sign/marker
Object - taxiway light

Analysis

The airplane ground looped while on the landing roll during an instructional flight. The private pilot said that he was receiving instruction from the certificated flight instructor (CFI) because he had very little experience with conventional landing gear equipped airplanes like the accident aircraft. While on the downwind leg of the traffic pattern, the pilot saw another aircraft on a straight in approach. In order to give the other airplane enough clearance, he began a series of "S" turns, which resulted in an unstabilized approach. He noted that on short final the airplane was too high and at an airspeed twice as fast as normal. The airplane touched down and began a slow right turn. The airplane continued the turn and veered of the runway surface, colliding with a runway direction sign and taxiway light. The private pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine.

Factual narrative

The airplane ground looped while on the landing roll. In a written statement, the private pilot reported that he was receiving instruction from the certificated flight instructor (CFI). He had accumulated 9.6 hours in the same make and model as the accident airplane, which was equipped with conventional landing gear. The private pilot stated that he departed and adjoined the downwind leg of the traffic pattern for the active runway. He extended the downwind leg in an effort to give adequate spacing between the accident airplane and an airplane that was landing. He noted that as he came in closer proximity to the runway, the other airplane had not cleared the runway.

The private pilot further stated that in effort to give the other airplane adequate clearance, he maneuvered the accident airplane in a series of "S" turns followed with a 360-degree turn. After completing the turn, he reestablished the airplane on short final. He noted that the airplane was too high and at an airspeed twice as fast as normal. The airplane touched down, veering from left to right. It began a slow right turn and the pilot attempted to arrest the turn by applying left rudder input. The airplane continued the turn and veered of the runway surface colliding with a runway direction sign and taxiway light. The airplane came to rest 180 degrees from the runway heading.

The private pilot reported no preimpact mechanical malfunctions or failures with the airframe or engine. The airplane incurred damage to numerous ribs during the accident sequence.

Aircraft

Registration
N85835
Reported as
Aeronca 11AC
Category
Airplane
Serial number
11AC242
Engine
Continental A65-8ATC, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Airworthiness certificate
Standard, Normal
Departed
GEU · Glendale, AZ
Destination
GEU · Glendale, AZ
Airport
GEU · Glendale Municipal Airport, runway 19, 7,150 × 100 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Student pilot
Age
28
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1
Flight hours
346 total · 10 in this make and model · 10 in the last 90 days · 3 in the last 30 days
Role
Flight instructor
Age
22
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
20 statute miles
Lowest ceiling
None

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.