Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Monument Valley, Utah 84536
Tuesady, March 24, 1998 15:00 MST
NTSB Narrative Summary Released at Completion of Accident
The takeoff for the sightseeing flight seemed normal until approximately 500 feet agl. The pilot observed the airspeed decreasing and the manifold pressure drop from 36.5 inches to 23 inches. He turned the auxiliary fuel pump on and was unable to restart the engine. He performed a forced landing in rough, sandy terrain. Postcrash examination of the airplane revealed that the upper induction tube, which conducted compressed turbocharger intake air to the throttle body, was found separated at a rubber connecting sleeve approximately 10 inches prior to the throttle body. Scenic Airlines maintenance personnel had installed a remanufactured zero time engine on July 30, 1996. The T207A Information Manual did not provide abnormal operating procedures for continued engine operation following turbocharger failure. There is no current FAA requirement to include information regarding the proper operation of an airplane by the aircraft manufacturer in the event of a loss of compressed induction air while flying a turbocharged airplane.
NTSB Probable Cause Narrative
The engine's total power loss due to the induction air ducting separating because of inadequate maintenance by company personnel. Factors were the failure of the manufacturer to provide non-standard operating procedures in their airplane's information manual, and the failure of the FAA to require non-standard operating procedures in the manufacturer's airplane information manual; and the soft, sandy, unsuitable terrain on which to perform a forced landing.
Event Information
| Type of Event | Accident |
| Event Date | 3/24/1998 |
| Event Day of the Week | Tuesday |
| Time of Event | 1500 |
| Event Time Zone | Mountain Standard Time |
| Event City | MONUMENT VALLEY |
| Event State | UTAH |
| Event Country | -- |
| Zipcode of the event site | 84536 |
| Event Date Year | 1998 |
| Event Date Month | 3 |
| 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 | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1457 Mountain Standard Time |
| Direction of event from weather observation facility (degrees) | 46 |
| Weather Observation Facility ID | 4BL |
| Elevation of weather observation facility | 5865 |
| Distance of event from weather observation facility (units?) | 51 |
| Time Zone of the weather observation | MST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 8000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 50 |
| Air Temperature at event time (in degrees celsius) | 21 |
| Dew Point at event time (in degress fahrenheit) | -2 |
| Wind Direction (degrees magnetic) | 180 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 10 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 29 |
| Density Altitude (feet) | 7101 |
| Intensity of Precipitation | Unknown |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | 0 |
| On Ground, Minor Injuries | 0 |
| On Ground, Serious Injuries | 0 |
| Injury Total Fatal | -- |
| Injury Total Minor | 3 |
| Injury Total None | -- |
| Injury Total Serious | 3 |
| Injury Total All | 6 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 933 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Mar 24 1998 12:00AM |
| NTSB Notification Time | 1724 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Feb 23 2001 1:55PM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N73780 |
| NTSB Number | FTW98FA157 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 135: Air Taxi & Commuter |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Cessna |
| Aircraft Model | T207A |
| Aircraft Series Identifier | T207A |
| Aircraft Serial Number | 20700628 |
| Certified Max Gross Weight | 3800 |
| 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 | 7 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Mar 16 1998 12:00AM |
| Airframe hours since last inspection | 10 |
| Airframe Hours | 10511 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | SCENIC AIRLINES, INC. |
| Aircraft Owner Street Address | P.O. BOX 1385 |
| Aircraft Owner City | PAGE |
| Aircraft Owner State | AZ |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 86040 |
| 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 | ASWA |
| 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 | Passenger Only |
| Type of Flying (Per_Bus / Primary) | Unknown |
| Second Pilot on Board | No |
| Departure Point Same as Event | No |
| Departure Airport Code | 71V |
| Departure City | MONUMENT VALLEY |
| Departure State | UT |
| Departure Country | |
| Departure Time | 1455 |
| Departure Time Zone | MST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | PGA |
| Destination City | PAGE |
| Destination State | AZ |
| Destination Country | |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Feb 23 2001 1:55PM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 0 |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | Yes |
| Air Medical Flight | No |
| Medical Flight | -- |