SMT ATX GETS INTO A STALL AFTER TKOF WHILE ATTEMPTING GEAR RETRACTION.

Date: 1992-10 · Aircraft: Small Transport; Low Wing; 2 Turboprop Eng

Anomalies: aircraft-equipment-problem-less-severe|deviation-speed-all-types|inflight-event-encounter-weather-turbulence|inflight-event-encounter-loss-of-aircraft-control

Synopsis

SMT ATX GETS INTO A STALL AFTER TKOF WHILE ATTEMPTING GEAR RETRACTION.

Narrative

ON OCT/SUN/92; I WAS CAPT ON A FLY SVC FLT SCHEDULED FROM FAIRBANKS TO GALENA; AK. AFTER A NORMAL TKOF ON RWY 1L AT FAIRBANKS; I ATTEMPTED TO RETRACT THE LNDG GEAR AT APPROX 300 FT AGL. THE GEAR FAILED TO START THE RETRACTION CYCLE AND ALL 3 GEAR SHOWED DOWN AND LOCKED. I HAD EXPERIENCED THIS PROBLEM BEFORE AND SLOWER AIRSPDS FOR RETRACTION HAD; ON A PREVIOUS OCCASION; SOLVED THE PROBLEM. IN ORDER TO GIVE MAINT A CLRER PICTURE OF THE MALFUNCTION; AT 1500 FT I RETARDED THE PWR TO 800 POUNDS TORQUE AND CONTINUED THE CLB SLOWING TO 100 KTS. AT APPROX 2000 FT WITHOUT WARNING THE ACFT STALLED AND THE R WING DROPPED 30-40 DEGS. NO AUDIO STALL WARNING WAS EVIDENCED PRIOR TO THE STALL; I IMMEDIATELY ADVANCED THE PWR LEVERS AND THE ACFT FLEW CLEANLY OUT OF THE STALL WITH APPROX A 200 FT ALT LOSS. I REMAINED IN THE TFC PATTERN AND RETURNED THE ACFT FOR GEAR MAINT. ON A SUBSEQUENT TKOF 1 HR LATER IN ANOTHER SMA; I WATCHED THE TEMP ON CLBOUT. OUTSIDE AIR TEMP IN MY ACFT ROSE FROM 0 DEGS F ON THE SURFACE TO PLUS 23 DEGS F AT 5000 FT AND FROM CALM SURFACE WINDS THEY STEADILY INCREASED FROM OUT OF THE E AT ABOUT 2000 FT AND I COMPUTED A QUARTERING TAILWIND OF OUR 40 KTS AT MY CRUISE ALT OF 8500 FT. I LEARNED ON THIS DATE THAT CLR SKIES AND SMOOTH AIR ARE NOT GUARANTEES WIND SHEAR CANNOT BITE YOU. I FEEL I WAS DOING THE RIGHT THING IN THIS CASE AND FLEW THE AIRPLANE OUT OF THE CONDITION WITHOUT INCIDENT BUT WITH PAX IT WAS EMBARRASSING AND PROVED TO ME HOW RAPIDLY THE CONDITION CAN OCCUR.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.