Descripción del Accidente ASN 22 DEC 2012 Fairchild SA227-AC Metro III C-GFWX - Sanikiluaq Airport, NU (YSK)
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Estado:Accident investigation report completed and information captured
Fecha:sbado 22 diciembre 2012
Tipo:Silhouette image of generic SW4 model; specific model in this crash may look slightly different
Fairchild SA227-AC Metro III
Operador:Perimeter Aviation
Registración: C-GFWX
Numéro de série: AC-650B
Año de Construcción: 1985
Horas Totales de la Célula:32982
Motores: 2 Garrett TPE331-11U-612G
Tripulación:Fatalidades: 0 / Ocupantes: 2
Pasajeros:Fatalidades: 1 / Ocupantes: 7
Total:Fatalidades: 1 / Ocupantes: 9
Daños en la Aeronave: Destruido
Consecuencias: Written off (damaged beyond repair)
Ubicación:Sanikiluaq Airport, NU (YSK) (   Canadá)
Elevación del lugar del accidente: 34 m (112 feet) amsl
Fase: Ascenso Inicial (ICL)
Naturaleza:Vuelo Doméstico Programado
Aeropuerto de Salida:Winnipeg International Airport, MB (YWG/CYWG), Canadá
Aeropuerto de Llegada:Sanikiluaq Airport, NU (YSK/CYSK), Canadá
Número de Vuelo:PAG993
A Swearingen SA227-AC Metro III passenger plane was involved in an accident at Sanikiluaq Airport, NU (YSK), Canada. The flight crew sustained serious injuries, 6 passengers sustained minor injuries and one passenger, an infant, was fatally injured.
The route from Winnipeg to Sanikiluaq is normally operated by Keewatin Air, a Perimeter Aviation sister company. The normally scheduled flight on the previous day (Friday, 21 December 2012) had been cancelled due to poor weather in Sanikiluaq. With extra cargo and passengers needing to travel to Sanikiluaq before Christmas, Keewatin Air completed a flight on the morning of 22 December 2012 and had chartered Perimeter to complete an additional flight. The Perimeter flight crew had been notified in the early evening of 21 December 2012 that they would be operating flight PAG993 the next morning.

Following an attempted visual approach to runway 09, a non-precision non-directional beacon (NDB) runway 27 approach was conducted. Visual contact with the runway environment was made and a circling for runway 09 initiated. Visual contact with the runway 09 environment was lost and a return to the Sanikiluaq NDB was executed. A second NDB runway 27 approach was conducted with the intent to land on runway 27. Visual contact with the runway environment was made after passing the missed approach point. Following a steep descent, a rejected landing was initiated at 20 to 50 feet above the runway; the aircraft struck the ground approximately 525 feet beyond the departure end of runway 27.

Probable Cause:

Findings as to causes and contributing factors:
1. The lack of required flight documents, such as instrument approach charts, compromised thoroughness and placed pressure on the captain to find a work-around solution during flight planning. It also negatively affected the crew's situational awareness during the approaches at CYSK (Sanikiluaq).
2. Weather conditions below published landing minima for the approach at the alternate airport CYGW (Kuujjuarapik) and insufficient fuel to make CYGL (La Grande Rivière) eliminated any favourable diversion options. The possibility of a successful landing at CYGW was considered unlikely and put pressure on the crew to land at CYSK (Sanikiluaq).
3. Frustration, fatigue, and an increase in workload and stress during the instrument approaches resulted in crew attentional narrowing and a shift away from well-learned, highly practised procedures.
4. Due to the lack of an instrument approach for the into-wind runway and the unsuccessful attempts at circling, the crew chose the option of landing with a tailwind, resulting in a steep, unstable approach.
5. The final descent was initiated beyond the missed approach point and, combined with the 14-knot tailwind, resulted in the aircraft remaining above the desired 3-degree descent path.
6. Neither pilot heard the ground proximity warning system warnings; both were focused on landing the aircraft to the exclusion of other indicators that warranted alternative action.
7. During the final approach, the aircraft was unstable in several parameters. This instability contributed to the aircraft being half-way down the runway with excessive speed and altitude.
8. The aircraft was not in a position to land and stop within the confines of the runway, and a go-around was initiated from a low-energy landing regime.
9. The captain possibly eased off on the control column in the climb due to the low airspeed. This, in combination with the configuration change at a critical phase of flight, as called for in the company procedures, may have contributed to the aircraft's poor climb performance.
10. A rate of climb sufficient to ensure clearance from obstacles was not established, and the aircraft collided with terrain.
11. The infant passenger was not restrained in a child restraint system, nor was one required by regulations. The infant was ejected from the mother's arms during the impact sequence, and contact with the interior surfaces of the aircraft contributed to the fatal injuries.

Accident investigation:

Investigating agency: TSB Canada
Status: Investigation completed
Duration: 2 years and 6 months
Accident number: A12Q0216
Download report: Final report

METAR Weather report:
01:00 UTC / 21:00 local time:
CYSK 230100Z 07014KT 3SM -SN BLSN OVC017 M03/M04 A2918 RMK SC8 CALL OUT SLP883
Wind 070 degrees at 14 knots; Visibility: 3 miles; blowing snow, light snow; overcast cloud deck at 1700 feet AGL; Temperature: -3°C; Dewpoint -4°C; Pressure 988.2 mb

22:00 UTC / 17:00 local time:
CYSK 222200Z 01017G25KT 2SM -SN BLSN OVC012 M05/M06 A2928 RMK SC8 CALL-OUT LAST OBS/NEXT 241300UTC SLP917
Wind 010 degrees at 17 knots, gusting to 25 knots; Visibility: 2 miles; blowing snow, light snow; overcast cloud deck at 1200 feet AGL; Temperature: -5°C; Dewpoint -6°C; Pressure 991.6 mb

Subsiguiente / acciones de seguridad

TSB issued 2 Safety Recommendations

Show all...


photo of Swearingen-SA227-AC-Metro-III-C-GFWX
accident date: 22-12-2012
type: Swearingen SA227-AC Metro III
registration: C-GFWX
photo of Swearingen-SA227-AC-Metro-III-C-GFWX
accident date: 22-12-2012
type: Swearingen SA227-AC Metro III
registration: C-GFWX
photo of Swearingen-SA227-AC-Metro-III-C-GFWX
accident date: 22-12-2012
type: Swearingen SA227-AC Metro III
registration: C-GFWX
photo of Swearingen-SA227-AC-Metro-III-C-GFWX
Flight path profile
photo of Swearingen-SA227-AC-Metro-III-C-GFWX
Compilation of all flight trajectories during the attempted landings at Sanikiluaq

Aircraft history
date registration operator remarks
OCT 1986 N26863 Resort Air delivered
06 APR 1987 N26863 Resort Air accident: hard landing damage found on nacelles during prefelight insecption at Columbia, MO. NTSB could not determine on which flight the damage occurred.
01 OCT 1989 N26863 Trans States Airlines renamed
05 MAY 1991 N26863 Mesaba Airlines leased
DEC 1994 N26863 Trans States Airlines
10 DEC 1996 N26863 Merlin Express
18 AUG 2003 C-GFWX Western Express Air Lines registered
OCT 2004 C-GFWX stored Vancouver, BC
06 APR 2005 C-GFWX Perimeter Aviation registered
25 AUG 2010 C-GFWX Perimeter Aviation accident: heavy landing at St. Theresa Point (CYST) in strong gusting winds

This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Winnipeg International Airport, MB to Sanikiluaq Airport, NU as the crow flies is 1389 km (868 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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