- Date
- July 13, 2006, 07:30 local (15:30 UTC)
- Place
- Big Lake, AK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Maneuvering
- Aircraft
- N5560TCessna 172E
- Weather
- Visual (VMC) · Day
- Status
- Completed · report February 26, 2007
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- Parties
- Anchorage FSDO-03
- FAA report
- 20060713016039A
- Case key
- 64210
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
The pilot's failure to maintain altitude/clearance from a transmission line while performing a low altitude maneuver, which resulted in an in-flight collision with the transmission line.
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.
Analysis
The private pilot was conducting a personal local flight under Title 14, CFR Part 91. While performing a low altitude maneuver, the airplane struck a transmission wire suspended between poles. The pilot was able to continue the flight and land without further incident. The airplane sustained structural damage to the right wing, right lift-strut, and rudder.
Factual narrative
On July 13, 2006, about 0730 Alaska daylight time, a Cessna 172E airplane, N5560T, sustained substantial damage during an in-flight collision with a power line while maneuvering at a low altitude, about 3 miles northwest of Big Lake, Alaska. The airplane was being operated by the pilot as a visual flight rules (VFR) personal local flight under Title 14, CFR Part 91, when the accident occurred. The solo private certificated pilot was not injured. Visual meteorological conditions prevailed, and no flight plan was filed for the local flight. The flight departed Big Lake Airport, Big Lake, about 0700.
During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on July 26, an FAA air safety inspector said he had been advised of a damaged airplane in a hangar at the Big Lake Airport. He stated that he had been given digital photographs of the accident airplane, which he forwarded to the IIC. The photographs depicted substantial damage to the right wing, which was cut through the leading edge to the spar, the right lift-strut had electrical arc burns, the rudder had been removed for replacement, and the vertical stabilizer leading edge was removed for replacement. The inspector said he had contacted the airplane's owner, who was out of the area for several weeks, by cellular phone. He stated that the owner/pilot told him he was flying his airplane northwest of Big Lake, looking for fish in a river when the airplane struck what he thought was a tree. He told the inspector he returned to the airport and inspected the damage. The inspector said the pilot reported that his mechanic told him that the damage indicated he had struck a power line.
On July 27, a manager for the local power company told the IIC that a power line had been struck by an airplane northwest of Big Lake on the morning of July 13, which caused a power outage.
In a written statement dated July 31, the pilot reported that he was attempting to spot fish in a creek when the airplane struck what he initially thought was a tree. He wrote that he returned to the airport and noted the damage to the right wing, lift-strut, and rudder. He indicated that a mechanic who examined the airplane, told him he must have struck a power line.
Aircraft
- Registration
- N5560T
- Reported as
- Cessna 172E
- Category
- Airplane
- Serial number
- 17251460
- Engine
- Continental O-300-D, 145 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Christopher Cyphers
- Registered owner
- N5560t LLC
- Airworthiness certificate
- Standard, Normal
- Departed
- BGO · Big Lake, AK
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
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 42
- Injuries
- None
- Certificate
- Private
- Airplane ratings
- Single-engine land
- Medical
- Class 1, With waivers/limitations
- Last flight review
- December 1, 2005
- Seat
- Left
- Flight hours
- 1,500 total · 1,300 in this make and model · 1,450 as pilot in command · 45 in the last 90 days · 15 in the last 30 days · 1 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- Calm
- Visibility
- 10 statute miles
- Lowest ceiling
- None
- Temperature
- 55 °F
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N5560T · 1
Matched to the same aircraft by N-number and date.