Individually Owned: 150,657
Corporate Owned: 137,281
Tulsa Downtown Airpark Airport
Aircraft Accident/Incident Report
Tulsa, Oklahoma 74127
Thursday, July 2, 1998 20:20 CDT
NTSB Narrative Summary Released at Completion of Accident
The flight was scheduled to review flight maneuvers prior to the student's practical flight test for the private pilot certificate. The airplane was configured with 25 degrees of flaps for a simulated short field takeoff. The flight instructor added that 'the engine sounded smooth during the entire flight' and the airplane appeared to accelerate normally as it became airborne by the 2,000 foot runway marker. After breaking ground, the 66 hour student pilot established the airplane at the best angle of climb speed; however, the airplane's climb performance was degraded to the point that the airplane was only climbing at a rate of 100 feet per minute. The flight instructor assumed the controls and initially managed to maneuver the airplane around rising terrain and obstructions at the departure end of the runway. The engine was examined under the supervision of the FAA inspector. The engine was started and operated through the normal flight parameters. No pre-existing engine deficiencies were noted and the investigation did not reveal any evidence that the engine was not capable of operating and producing power prior to the accident.
NTSB Probable Cause Narrative
The airplane's impeded climb performance for undetermined reasons. A factor was the rising terrain.
Event Information
| Type of Event | Accident |
| Event Date | 7/2/1998 |
| Event Day of the Week | Thursday |
| Time of Event | 2020 |
| Event Time Zone | Central Daylight Time |
| Event City | TULSA |
| Event State | OKLAHOMA |
| Event Country | -- |
| Zipcode of the event site | 74127 |
| Event Date Year | 1998 |
| Event Date Month | 7 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | |
| Event Location Longitude | |
| Event Location Airport | TULSA DOWNTOWN AIRPARK |
| Event Location Nearest Airport ID | 5F2 |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | 1 |
| Degrees magnetic from airport | 200 |
| Airport Elevation | 725 |
| Weather Briefing Completeness | Unknown |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 2053 Central Daylight Time |
| Direction of event from weather observation facility (degrees) | 267 |
| Weather Observation Facility ID | TUL |
| Elevation of weather observation facility | 750 |
| Distance of event from weather observation facility (units?) | 11 |
| Time Zone of the weather observation | CDT |
| Lighting Conditions | Day |
| Lowest Ceiling Height | 0 |
| Lowest Non-Ceiling Height | 0 |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | 0 |
| Visibility Runway Visual Value (Statute Miles) | 0 |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 26 |
| Dew Point at event time (in degress fahrenheit) | 21 |
| Wind Direction (degrees magnetic) | 180 |
| Variable Wind Indicator | Unknown |
| Wind Speed (knots) | 9 |
| Wind Velocity Indicator | Unknown |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | 0 |
| Altimeter Setting at event time (in. Hg) | 30 |
| Density Altitude (feet) | 2109 |
| 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 | 1 |
| Injury Total None | -- |
| Injury Total Serious | 1 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 948 |
| NTSB Notification Source | -- |
| NTSB Notification Date | Jul 2 1998 12:00AM |
| NTSB Notification Time | 810 |
| Fiche Number and/or location -used to find docket information | IMAGE |
| Date of most recent change to record | Dec 11 2000 11:36AM |
| User who most recently changed record | dbo |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N1656J |
| NTSB Number | FTW98LA294 |
| Missing Aircraft Indicator | N |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | -- |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Piper |
| Aircraft Model | PA-28-140 |
| Aircraft Series Identifier | PA-28-140 |
| Aircraft Serial Number | 28-24052 |
| Certified Max Gross Weight | 2100 |
| 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 | 4 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | Annual |
| Date of Last Inspection | Nov 3 1997 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 5450 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | Unknown |
| ELT Type | -- |
| Aircraft Owner Name | EVERETT D. OAKS |
| Aircraft Owner Street Address | HC 69, BOX 723 |
| Aircraft Owner City | SPAVINAW |
| Aircraft Owner State | OK |
| Aircraft Owner Country | |
| Aircraft Owner Zipcode | 74366 |
| 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 | None |
| 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 | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Instructional |
| Second Pilot on Board | Yes |
| Departure Point Same as Event | Yes |
| Departure Airport Code | 5F2 |
| Departure City | |
| Departure State | |
| Departure Country | |
| Departure Time | 2020 |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | |
| Destination City | |
| Destination State | |
| Destination Country | |
| Specific Phase of Flight | Takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Jan 2 2001 10:30AM |
| User who most recently changed record | dbo |
| Since inspection or accident | -- |
| Event Location Runway Number and Location | 20 |
| Runway Length | 2965 |
| Runway Width | 40 |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |