FLT INSTRUCTOR EXCEEDED THE LIMITATIONS OF HIS STUDENT AND THE AIRPLANE BY SIMULATING AN ENG FAILURE TOO LOW OF AIRSPD AND ALT TO RECOVER AND STALLED SO THAT THE WING STRUCK THE WATER AND THE FLOATPLANE WATERLOOPED.
Synopsis
FLT INSTRUCTOR EXCEEDED THE LIMITATIONS OF HIS STUDENT AND THE AIRPLANE BY SIMULATING AN ENG FAILURE TOO LOW OF AIRSPD AND ALT TO RECOVER AND STALLED SO THAT THE WING STRUCK THE WATER AND THE FLOATPLANE WATERLOOPED.
Narrative
ON A PVT PLT'S FIRST LESSON IN A FLOATPLANE; A SIMULATED ENG FAILURE AT LOW ALT RESULTED IN 'GND LOOPING' TYPE ENCOUNTER WITH THE SURFACE OF THE WATER; DAMAGING THE L WING OF THE PIPER SUPERCUB FLOATPLANE BUT LEAVING THE STUDENT AND INSTRUCTOR UNHARMED. THE STUDENT DEMONSTRATED RAPID PROFICIENCY IN PERFORMING AIR WORK; HAVING FLT EXPERIENCE IN SIMILAR ACFT DURING THE INITIAL TRAINING. THE FIRST TKOFS AND LNDGS ON THE WATER WERE EXEMPLARY WITH THE EXCEPTION OF APCH SPDS ON BASE AND FINAL WHICH WERE 10-12 MPH LOW. AS A REMEDY THE INSTRUCTOR DECIDED TO HAVE THE PLT PERFORM SEVERAL GLIDE APCHS TO A FULL STOP. THE FIRST ONE AT PATTERN ALT; 650 AGL; WAS ACCEPTABLE SO THE LESSON PROCEEDED TO SPECIALIZED TKOFS AND LNDGS (IE; XWIND AND GLASSY WATER). AFTER SEVERAL MORE LNDGS WITH SLOW AIRSPDS; THE INSTRUCTOR REQUESTED THE STUDENT LAND THE ACFT FROM A LOW ALT; AND SIMULATING A PWR LOSS AFTER A 250 FT CLB FROM TKOF. THE PLT BALKED AT LOWERING THE NOSE TO MAINTAIN BEST GLIDE SPD OF 70 MPH AND DIDN'T LOWER THE NOSE WHEN CAUTIONED BY THE INSTRUCTOR. THE INSTRUCTOR ATTEMPTED A RECOVERY FROM THE NOSE HIGH ATTITUDE TOO CLOSE TO THE WATER. INTRODUCING FULL THROTTLE AT 5-10 FT OVER THE WATER PRIOR TO TOUCHDOWN; TORQUE ROLLED THE ACFT TO THE L AND THE L CONTACTED THE WATER BEFORE THE INSTRUCTOR WAS ABLE TO RIGHT THE PLANE AND PREVENT CAPSIZING. NEITHER THE STUDENT OR PLT WERE INJURED. WHEN ASKED AFTERWARD IF THE STUDENT (PVT PLT) HAD EXPERIENCE WITH LOW ALT EMER OPS AND ABORTED TKOF PROCS HE SAID NONE OF ANY DEPTH AND WAS NOT EVEN TESTED FOR ENG FAILURE PROCS DURING THE PVT PLT PRACTICAL FLT TEST. THIS INCIDENT MOST LIKELY COULD HAVE BEEN AVOIDED BY THE INSTRUCTOR BY FIRSTLY PROCEEDING AT A SLOWER PACE DURING THE BEGINNING INSTRUCTION PHASE. INTRODUCING SIMPLER MANEUVERS AND ALLOWING THE STUDENT MORE OPPORTUNITY FOR DEVELOPING BASICS IN A NEW ENVIRONMENT. IN THE FAST PACED TRAINING SCHEDULE TYPICAL OF MOST SEAPLANE TRAINING OP/INSTRUCTION SHOULD NOT WANDER FROM STANDARD SYLLABUS STRUCTURE FOR THE OCCASIONAL STUDENT WHO MAY APPEAR TO BE A QUICK LEARNER ON THE SURFACE BUT WHO'S FLT EXPERIENCE IS ACTUALLY LOW TIME AND LIMITED.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.