Flight Instructor reported a partial engine failure during takeoff and made an immediate landing but suffered a runway excursion. The aircraft was able to be taxied back to the ramp and was handed over to maintenance.
Synopsis
Flight Instructor reported a partial engine failure during takeoff and made an immediate landing but suffered a runway excursion. The aircraft was able to be taxied back to the ramp and was handed over to maintenance.
Narrative
On Date between XA:00 and XA:30 local time our aircraft experienced a partial engine failure during takeoff and successfully made an immediate landing moments after becoming airborne. No injuries or damage were reported by the Pilots.A thorough pre-flight of the aircraft was performed prior to flight; 23 gallons of fuel and 6 quarts of oil. The pre-flight was crosschecked by the Instructor. A normal startup was conducted with three shots of primer. No abnormalities were noted by either Pilot during startup and taxi. At XA:12 local time run up was completed; with magnetos dropping around 100 RPM (the Private Pilot did not lean for density altitude at first). A second mag check was completed with the mixture leaned properly; Left mag dropped 80 RPM and right mag dropped 50 RPM. Oil temperature and pressure were normal. Fuel selector was both at takeoff.The takeoff roll started at XA:17 and no abnormalities were noted on takeoff. Normal smooth rotation; engine gauges all in the green. Approximately 150 feet AGL; engine roughness began. The renter handed controls to the instructor. While still airborne the throttle was checked; the mixture enriched; mags double checked; and fuel selector verified in both position. The aircraft altimeter indicated 2;450 feet MSL at the time of failure. A sharp left turn was executed before a successful landing on Taxiway 1. Taxiway 1 was overshot at the intersection of XX and XY where the aircraft went through a ditch less than one minute later. No damage was sustained to the aircraft; Pilots; or airport lighting. The aircraft had enough power to taxi back to the ramp. Upon shutdown and examination there was no exterior damage noted but a burning oil smell and light white smoke exiting the cowling was noted. Aircraft was grounded and put under maintenance.
Second reporter narrative
On Date between XA:54 local time and XB:34 the aircraft experienced a partial engine failure during takeoff and successfully made an immediate landing moments after becoming airborne. No injuries or damage were reported by the Aircrew. The purpose of this flight was to certify a renter was capable of performing two normal takeoff and landings and one go around by an Instructor. Pre-flight was conducted by the student and noted 11 gallons of fuel in the left wing tank and 13 in the right to total 24 gallons of usable fuel with 6 quarts of oil. The pre-flight; fuel and oil levels were cross checked by the instructor. A normal startup was conducted with three shots of primer. No abnormalities were noted by either Crew Member during startup and taxi. At XB:12 local time the aircraft completed a run up where magneto checks were out of limits. This action was done prior to leaning and when repeated after leaning the magneto checks were: Left dropping approximately 80 RPM and the right magneto dropping approximately 50 RPM. Oil temperature and pressure were normal. Fuel selector was in BOTH at takeoff. The takeoff roll was started at XB:17 and no abnormalities were noted during the takeoff roll. At 55 KIAS rotation began and moments later at approximately XB:18 and 150 feet AGL engine roughness began. The renter immediately handed controls to the Instructor. While still airborne the throttle was checked for full throttle; the mixture was enriched; and magnetos checked but nothing was able to restore power to the engine. The aircraft was indicating approximately 2;450 feet MSL at the time of failure. A sharp left turn was executed before a successful landing on Taxiway 1. Taxiway 1was overshot at the intersection of XX and XY where the aircraft went through a ditch less than one minute later. No damage was sustained and the aircraft was able to taxi back under its own power to the parking ramp. Upon shutdown and examination there was no exterior damage noted but a burning oil smell and light white smoke exiting the cowling was noted by both renter and instructor.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.