Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Moose Creek, Idaho 83530
Thursday, November 20, 1986 11:12 PST
NTSB Narrative Summary Released at Completion of Accident
AFTER DEPARTURE AND DURING THE INITIAL CRUISE CLIMB THE PLT AND PAX HEARD A METALLIC CLICKING DESCRIBED AS SOUNDING LIKE A 'VALVE TAP' IN AN AUTOMOBILE AND COMING FROM THE ENG AREA. THE PLT EXECUTED AN IMMEDIATE COURSE REVERSAL BACK TO THE AIRSTRIP WHILE STILL WITHIN THE NARROW GORGE OF THE SELWAY RIVER. THE IMMEDIACY OF THE REVERSE TURN WAS BROUGHT ABOUT BY THE PLT'S EXPECTATION OF IMPENDING MECH PROBLEM WITH THE ACFT AS WELL AS ANXIETY OF THE SITUATION AT SUCH A CRITICAL TIME DURING THE FLT. THE TURN AT A RELATIVELY LOW ALT WITHIN THE GORGE NECESSITATED A TIGHT TURN RADIUS AND THUS REDUCED THE RATE OF CLIMB IN AN ALREADY HEAVILY LOADED ACFT. THIS EVENT PLACED THE ACFT IN A POSITION WHEREBY CLEARANCE WITH THE HEAVILY WOODED UPSLOPING SIDES OF THE GORGE WAS NOT POSSIBLE. DISASSEMBLY, INSPECTION AND TESTING (WHERE POSSIBLE) OF THE ENG, PROP AND ASSOCIATED COMPONENTS REVEALED NO EVIDENCE OF ANY PREIMPACT MALFUNCTION WHICH WOULD HAVE RESULTED IN A POWER LOSS, NOR ANY EXPLANATION FOR THE CLICKING NOISE.
NTSB Probable Cause Narrative
Not Yet Reported
Event Information
| Type of Event | Accident |
| Event Date | 11/20/1986 |
| Event Day of the Week | Thursday |
| Time of Event | 1112 |
| Event Time Zone | Pacific Standard Time |
| Event City | MOOSE CREEK |
| Event State | IDAHO |
| Event Country | -- |
| Zipcode of the event site | 83530 |
| Event Date Year | 1986 |
| Event Date Month | 11 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | |
| Event Location Nearest Airport ID | |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 0 |
| Degrees magnetic from airport | 0 |
| Airport Elevation | 0 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Pilot |
| Time of the weather observation | 0 |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | |
| Elevation of weather observation facility | 0 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Unknown |
| Sky Condition for Lowest Ceiling | Overcast |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 25 |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | 0 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 0 |
| Wind Velocity Indicator | Light and Variable |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | -- |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Fatal |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | 1 |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 2075 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Nov 20 1986 12:00AM |
| NTSB Notification Time | 1233 |
| Fiche Number and/or location -used to find docket information | 32610 |
| Date of most recent change to record | Jan 2 2001 9:14AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N7311Q |
| NTSB Number | SEA87FA027 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Destroyed |
| Aircraft Fire | Ground |
| Aircraft Explosion | Ground |
| Aircraft Manufacturer's Full Name | CESSNA |
| Aircraft Model | U206F |
| Aircraft Series Identifier | U206F |
| Aircraft Serial Number | U20602169 |
| Certified Max Gross Weight | 3600 |
| Aircraft Category | Airplane |
| Aircraft Registration Class | U.S. Registered/U.S. Soil |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Oct 20 1986 12:00AM |
| Airframe hours since last inspection | 40 |
| Airframe Hours | 6547 |
| ELT Installed | Yes |
| ELT Activated | Yes |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | GRANGEVILLE AIR SERVICE, INC. |
| Aircraft Owner Street Address | P.O. BOX 369 |
| Aircraft Owner City | GRANGEVILLE |
| Aircraft Owner State | ID |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 83530 |
| Operator is an individual? | -- |
| Operator Name | |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | |
| Operator City | |
| Operator State | |
| Operator Country | |
| Operator Zip code | |
| Operator Code | |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | Unknown |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | Non-scheduled |
| Indicates Domestic or International Flight | Domestic |
| Operator carrying Pax/Cargo/Mail | Cargo |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | 1U1 |
| Departure City | MOOSE CREEK |
| Departure State | ID |
| Departure Country | |
| Departure Time | 1110 |
| Departure Time Zone | PST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | S80 |
| Destination City | GRANGEVILLE |
| Destination State | ID |
| Destination Country | |
| Specific Phase of Flight | Maneuvering |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:36AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | 0 |
| Runway Width | 0 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |