MINIMUM EQUIPMENT LIST APPENDIX 1 OPERATIONAL PROCEDURES ATA 73 ENGINE FUEL AND CONTROL F-27 Mk 050

Transcription

1 1 of Engine Electronic Control Dispatch with one ENG EC DEGRADED light illuminated: Note: 1. Perform auto feather test prior to each flight. 2. Actual torque indication must be available. 3. Flexible take-off (flex mode) is not allowed. 4. Economy level selection (econ mode) is not allowed. If ENG EC on affected side has defaulted to GA rating (NP on ground is 80 per cent) apply Procedure 1. If torque bug on affected side is inoperative apply Procedure 2. If torque bug is available and ENG EC did not default to GA power, normal flight techniques and system procedures are applicable. Procedure 1: (Affected ENG EC defaults to Go-Around rating) As affected engine electronic control has defaulted to GA rating, take-off is made with GA selected on the ERP. In flight the torque of the affected engine is matched with the torque of the ENG EC normal" engine. Before engine start: For correct usage of QRH power setting tables check what engine type is installed. (Placard above TRQ indication) Determine and note take-off torque from QRH power setting tables. (Table: Rating: Go Around / NP: 10 per cent / IAS: Approx 60 kt.) Be prepared for loss of torque bug information for both engines in flight after which torque bugs must be set manually. For correct usage of QRH power setting tables check what engine type is installed. (Placard above TRQ indicator) Determine and note initial CLB torque and CLB torque in steps of ft up to Planned cruise altitude from QRH power setting tables.

2 2 of 10 (Table: Rating: Climb / NP: 85 per cent / IAS: 160 kt.) Determine and note planned CRZ torque from QRH power setting tables. (Table: Rating: cruise / NP: 85 per cent.) Determine and note GA torque from QRH power setting tables. (Table: Rating: Go Around / number of operating engines: 2 /IAS: Approx 110 kt / NP 100 per cent / Air conditioning: ON.) Determine and note MCT torque from QRH power setting tables. (Table: Rating: Max Continuous / number of operating engines: 1 / IAS: Approx 120 kt /Air conditioning: OFF below ft.) Engine start: Carry out normal engine start but leave fuel level of ENG EC DEGRADED ENGINE IN Start position during ground operation (propeller feathered) Fuel level ENG EC DEGRADED engine START Taxi..on ENG EC normal engine onlytaxi-off: Fuel lever ENG EC DEGRADED engine...open 5 unfeather) ERP.GA NP of ENG EC DEGRADED engine..check matched with other engine Generator OFF light...check out FD modes GA, HDG, ASEL. Check /Select Brakes RELEASE

3 3 of 10 Power levers...advance to detent Auto feather, APR light.armed At 60 kt Check torque Engine failure during take-off: In case of ENG EC normal engine failure after v1: At 400 ft AGL: Fuel lever SHUT At acceleration altitude when reaching Vfto: - ERP.MCT Adjust power lever of operating ENG EC DEGRADED engine to match the torque bug of ENG EC normal engine. Climb Before selecting climb power, reduce torque of ENG EC DEGRADED engine by approx. 15 per cent. ERP...CLB Torque ENG EC DEGRADED engine....match with ENG EC normal climb. Monitor and re-adjust torque of ENG EC DEGRQDED engine during climb. CRZ/GA/MCT: ERP.As required Torque ENG EC DEGRADED engine...match with ENG EC normal engine. Monitor and re-adjust torque of ENG EC DEGRQDED engine during cruise, descent And approach After landing: ERP TO Fuel lever ENG EC DEGRADED engine.start or SHUT Use ENG EC normal engine to taxi. Procedure 2: (Torque bug on affected side is not available) bug of the other engine may be As the torque bug is not available on affected side, the torque used to set the torque. Before engine start: Be prepared for loss of torque bug

4 4 of 10 information for both engines in flight after which torque bugs must be set manually. For correct usage of QRH power setting tables check what engine type is installed. (Placard above TRQ indicator, if installed.) Determine and note TO torque from QRH power setting tables. (Table: Rating: Take-off/ IAS: Approx 60 kt / Air conditioning: ON.) Determine and note initial CLB torque and CLB torque in steps of 5000 ft up to Planned cruise altitude from QRH power setting tables. (Table: Rating Climb / NP: 85 per cent / IAS: 160 kt.) Determine and note planned CRZ torque from QRH power setting tables. (Table: Rating: Cruise / NP: 85 per cent.) Determine and note GA torque from QRH power setting tables. (Table: Rating: Go-Around / number of operating engines: 2 / IAS: Approx 110 kt / NP 100 per cent / Air conditioning: ON.) Determine and note MCT torque from QRH power setting tables. (Table: Rating: Max Continuous / number of operating engines: 1 / IAS: Approx 120 kt / Air conditioning: OFF below ft.) TO/CLB/CRZ/GA/MCT: The torque of the affected engine may be set using the torque bug of the other engine: Torque affected engine Match with working bug

5 5 of 10 Engine Electronic Control Dispatch with one ENG EC in manual mode (MAN light illuminated) Engine controlled by MFC only. Apply procedure A if PW 125B engines are installed. If PW125B HIGH TRQ engines are installed, dispatch with one ENG EC in manual Note: a placard above the torque indicator identifies the applicable engine type. Procedure A: Applicable to PW125B engine The torque bug of the affected ENG EC may be off. The torque of the affected engine may in that case be set using the torque bug of engine. In case of an ENG EC normal engine failure during TO, the automatic up trim of the MFC engine (APR) is inoperative. To obtain maximum take-off performance, the GA rating (MTO) should be used for take-off. Once take-off power (GA) is set, the torque of the ENG EC engine will follow any change of the bug during take-off and climb.the torque of the MFC engine may vary due to power lapse rate and/or bleed shut off in case of engine failure. The resulting difference in take- off power requires calculation of a reduced performance limited take-off weight. Flight preparation: Calculate performance limited take-off weight as follows: Enter Individual or Quick Reference TL table with OAT (Maximum operating temperature is ISA+26). Find climb or runway length limited take-off weight. Apply correction for HEADWIND. Note: when available refer to individual tl table for eng ec man instead. determine take-off torque from power setting table in qrh. (table: rating: go-around / np: 100 per cent / ias: approx 60 kt.)

6 6 of 10 Additionally: if torque bug of the affected ENG EC is inoperative: To be prepared for loss of torque bug information for both engines in flight after which torque bugs must be set Manually, determine and note CLB, CRZ, GA and MCT torques prior to the flight. Determine and note initial CLB torque and CLB torque in steps of 5000 ft up to planned cruise altitude from QRH Power setting tables. (Table: Rating Climb/NP: 85 per cent/ias: 160 kt.) Determine and note planned CRZ torque from QRH power setting tables. (Table: Rating Cruise/NP: 85 per cent.) Determine and note GA torque from QRH power setting tables. (Table: Rating: Go-Around /number of operating engines: 2/IAS: Approx 110 kt/np 100 per cent.) Determine and note MCT torque from QRH power setting tables. (Table: Rating: Max Continuous /number of operating engines: 1/IAS: Approx 120 kt/air conditioning OFF below ft.) Engine start: Carry out normal engine start but leave fuel lever of MFC engine in START position during ground operation (Propeller feathered). Fuel lever MFC engine.start TRQ, NP, NH and NL of MFC engine varies with ambient temperature and differs from ENG EC engine. Taxi..on ENG EC engine only Take - off: Line up on runway centerline and hold on brakes to set take-off power. Power levers GND IDLE Fuel lever MFC engine. OPEN (unfeather) LO PITCH light MFC engine Check ON

7 7 of 10 ERP..GA Generator OFF LIGHT Check OUT FD modes GA, HDG, ASEL Check/Select Torque SET, match torque with bug(s) Brakes..Release Power lever position of MFC engine varies with ambient temperature and may be beyond the detent position Autofeather, APR A/F light.armed Engine failure during take-off: In case of ENG EC normal engine failure after V1: At 400 ft AGL. Fuel lever..shut At acceleration altitude when reaching VFTO: ERP MCT Adjust Power lever of operating MFC engine to match the torque bug of ENG EC normal engine. Climb: Before selecting climb power, reduce torque of MFC engine by approx 15 per cent. ERP...CLB Torque MFC engine Match with ENG EC engine Monitor and re-adjust torque of MFC engine during climb, cruise, descent and approach. Go-Around: Pilot not flying: Torque MFC engine..match with ENG EC engine. Taxi: ERP...T Fuel lever MFC engine START or SHUT Use ENG EC engine to modulate taxi power.

8 8 of 10 At acceleration altitude when reaching Vfto: ERP..MCT Adjust power lever of operating MFC engine to match the torque bug of ENG EC normal engine. Climb: Before selecting climb power, reduce torque of MFC engine by approx 15 per cent. ERP..CLB Torque MFC engine....match with ENG EC engine Monitor and re-adjust torque of MFC engine during climb, cruise, descent and approach. Go-Around: Pilot not flying: Torque MFC engine..match with ENG EC enginetaxi ERP...TO Fuel lever MFC engine.. START or SHUT Use ENG EC engine to modulate taxi power Engine Rating Panel Applicable to aircraft MSN Before engine start: Verify AC power available and switched on. Verify green bar in TO rating push button on ERP is at least partly illuminated. For correct usage of QRH power setting tables check what engine type is installed. (Placard above TRQ indicator, if installed.) Determine and note take-off torque from QRH power setting tables. (Table: ENG EC inoperative/rating: Go-Around/NP: 100 per cent/ias: approx 60 kt.) Determine and note initial CLB torque and CLB torque in steps of 5000 feet up to Planned cruise altitude from QRH power setting tables. (Table: ERP inoperative/rating Climb/160 kt IAS/NP 100 per cent. After engine start: Verify NP of both engines is below 65 per cent with TO rating selected.

9 9 of 10 Taxi: ERP..TO When commencing take-off: ERP..GA Climb: Retard power levers to obtain required climb torque. TRQ indicators...both MAN Torque bugs...set Note: Auto feather ARM light may remain ON during part of climb (depends on power lever position).continue flight applying the AFM Abnormal procedure for Engine Rating PANEL Fault. Note: np will remain 100 per cent throughout the flight. auto feather standby light will remain on throughout the flight.

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