Incident
at ESTEVAN REGIONAL SK (CYEN)
(Aerodrome - runway or taxiway surface condition)
C-GYSC, a Beech King Air 200, was landing at Estevan and during rollout, the left training edge flaps hit a snowdrift on the runway. The crew could not see any damage when the a/c was parked and the flaps were retracted and later returned to base in Calgary. Maintenance inspection revealed that when the flaps were in the extended position, there was an assymetry evident in the left inboard flap, which was likely caused by the collision with the snowdrift.
Aerodrome Safety update reports that the landing portion of this event was not accurate, the snow drift was not on the runway. The airport winter maintenance program for proper snow dispersal on aprons, taxiways, runways as well as in and around the approach, runway and Papi lighting systems is dependent on the use of the cities snow blower. This is subject to the needs of the city. The airport maintainer operates a snow plough with a wing blade to remove snow. This type of vehicle is adequate when winter snow accumulations are normal. However these series of winter storms has forced the A.P.M. to issue a blanket Notam valid until April advising pilots to be extra vigilant when flying into and out of Estevan. Forty knot winds from the North, North West were producing obscured ceilings and reduced ground visibilities in blowing snow. The pilot reported that he elected to land on runway 33 rather than 26 because of the aircrafts crosswind limitations. The approach to 33 although bumpy and rough due to mechanical turbulence associated with the strong, gusting surface winds was accomplished with the green threshold light's visible. The pilot reported that just at round out he felt a shutter on the nose wheel. The aircraft was brought to a stop and turned to back track on runway 15 for the apron and terminal area, while back tracking the he noted that the red runway end lights were not visible. The pilot then saw that the snow had accumulated or been plowed between the runway end and the approach lights. The snow accumulation were estimated to be about three feet in height. On February 3rd Aerodrome Safety personnel flew to Estevan and conducted a winter / night inspection of the facilities there. Although the bank of snow at the end of runway 33 had been somewhat reduced snow build up was still in evidence as was tire marks prior to the approach lights and runway end. The airport manager has since reported that an older snow blower had been located and that the snow removal process is now on going. This should help restore normal operations. Aerodrome Safety have been in contact with the pilot from Sanjel Corp. regarding this event and have been assured that up to date runway condition reports will be obtained by flight crews from the A.P.M. or his representative at Estevan prior to departure. They will also advise A/S if and when other anomalies arise.
UPDATE TSB reported that the Sanjel Corporation Beech 200, C-GYSC, was on a corporate flight from Calgary, Alberta to Estevan, Saskatchewan. This was a single-pilot flight with no passengers. On landing at Estevan, the aircraft hit a snow drift that crossed the runway. The aircraft was placed in a hangar and no damage was noted. After a return flight to Calgary, during a daily inspection, it was noted that the left flap outboard section was misaligned with the inboard flap section. Flap assembly P/N 101-160001-17 was found to be buckled. The damage was not readily visible with the flaps in the flaps-up position, as the buckled area was hidden from view under the wing locker. The flap was removed for repair. Additional aircraft inspection has not identified any other related damage.
UPDATE TSB classification changed from ""Accident"" to ""Voluntary Incident"".