Individually Owned: 150,657
Corporate Owned: 137,281
Yentna River Lodge Airstrip Airport
Aircraft Accident/Incident Report
Skwentna, Alaska 99667
Saturday, June 29, 2013 14:30 AKD
NTSB Narrative Summary Released at Completion of Accident
The pilot was departing from a grass-covered runway, and about 100 feet above the ground, the airplane’s engine began to lose power. Unable to maintain altitude, the pilot landed the airplane in a swamp; during the landing the airplane nosed over, substantially damaging the wings and vertical stabilizer. The pilot stated that the engine had just been returned to service after a major overhaul, and that it had operated about 3 hours since being returned to service. Examination of the engine revealed that the No. 6 top spark plug ignition wire was inoperative; however, it could not be determined if the damage to the wire was present before the accident. A significant amount of water was found in the gascolator bowl, but due to the position of the airplane in the swamp after the accident, it could not be determined whether or not the water was present at the time of the accident.
No other preaccident mechanical malfunctions or failures were noted that would have precluded normal operation.
NTSB Probable Cause Narrative
The partial loss of engine power for reasons that could not be determined because the postaccident examination of the engine did not reveal any anomalies that would have precluded normal operation.
.
Event Information
| Type of Event | Accident |
| Event Date | 6/29/2013 |
| Event Day of the Week | Saturday |
| Time of Event | 1430 |
| Event Time Zone | -- |
| Event City | Skwentna |
| Event State | ALASKA |
| Event Country | -- |
| Zipcode of the event site | 99667 |
| Event Date Year | 2013 |
| Event Date Month | 6 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 615828N |
| Event Location Longitude | 1510935W |
| Event Location Airport | Yentna River Lodge Airstrip |
| Event Location Nearest Airport ID | NA |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 150 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Pilot |
| Time of the weather observation | 2254 Coordinated Universal Time? Same as GMT |
| Direction of event from weather observation facility (degrees) | 275 |
| Weather Observation Facility ID | PASW |
| Elevation of weather observation facility | 148 |
| Distance of event from weather observation facility (units?) | 2 |
| Time Zone of the weather observation | UTC |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 3500 |
| Lowest Non-Ceiling Height | 1800 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 30 |
| Air Temperature at event time (in degrees celsius) | 19 |
| Dew Point at event time (in degress fahrenheit) | 12 |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | Calm |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 30.02 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | METAR PASW 292254Z 00000KT 30SM SCT018 OVC035 19/1 |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 2 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 32646 |
| NTSB Notification Source | Alaska State Troopers |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Feb 13 2014 4:40PM |
| User who most recently changed record | shac |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7698M |
| NTSB Number | ANC13LA059 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | 175 |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 55998 |
| Certified Max Gross Weight | -- |
| Aircraft Category | Airplane |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Jun 1 2013 12:00AM |
| Airframe hours since last inspection | 3 |
| Airframe Hours | 2316 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | C91-A |
| Aircraft Owner Name | ZILKO KEVIN A |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | ANCHORAGE |
| Aircraft Owner State | AK |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 99507-4937 |
| Operator is an individual? | Yes |
| Operator Name | ZILKO KEVIN A |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | ANCHORAGE |
| Operator State | AK |
| Operator Country | USA |
| Operator Zip code | 99507-4937 |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Personal |
| Second Pilot on Board | -- |
| Departure Point Same as Event | Yes |
| Departure Airport Code | -- |
| Departure City | Skwentna |
| Departure State | AK |
| Departure Country | USA |
| Departure Time | 1430 |
| Departure Time Zone | ADT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | PAMR |
| Destination City | Anchorage |
| Destination State | AK |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Mar 18 2014 6:59PM |
| User who most recently changed record | stam |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |