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SW CQ 2012 Powerplan
Powerplant
| Question | Answer |
|---|---|
| POWERPLANT: 1. When does the Air Turbine Starter (ATS) normally cutout? | CRJ 200: N2 RPM exceeds 55% CRJ 700/900: N2 RPM exceeds 50% |
| 2a. What is APR? | APR provides: 1)Automatic Engine Failure Detection 2)Thrust increase upon detection CRJ200:8729->9220 2% N1 increase to good engines CRJ700:12760->13790 CRJ900:13535->14255 |
| 2b. How is the APR armed? | CRJ200: 1) APR switches set to ARM 2) Engine Speed switches set to ON 3) Weight on Wheels 4) N1 RPM>79.1% (in N1 mode) 5) Operative ECU 6) 2 operating DCUs CRJ700/900: During T/O when N1 RPM of both engines are within 8% of scheduled T/O p |
| 3. Do we have APR on Go Around? | CRJ 200: No because one of the requirements to arm the APR is Weight ON wheels CRJ 700/900: Yes, APR is armed when the approach bit is set by having 1)Either engines available 2) Flaps >20 deg -or- Landing gear down |
| 4. How is APR activated? | CRJ200: when either engine <67.6% CRJ700/900: 1)FADEC determines a N1 mismatch >15% 2)Thrust levers must be in TOGA detent 3)Programmed N1 setting either norm/reduced note:APR pwr is activated when one/both thrustlevers are set in MAX PWR detent |
| 5. You gain an additional ____% or _____ LBS thrust with APR | 2% or 500 LBS |
| 6. What do the engine speed switches do on the CRJ 200? | 1) arm APR system 2) Engine speed control (N1 vs N2 mode) |
| 6b. In the N1 mode, is it possible to control n2 RPM speeds? | Yes, but the thrust lever position/angles will be mismatched (not close to aligned) for N2 speeds |
| 6c. In the N2 mode, is it possible to control N1 RPM speeds? | Yes, but the thrust lever position/angles will be mismatched for N1 speeds |
| 6d. What should be done to automatically go from N1 mode -to- N2 mode? | Select both engine speed switches OFF -or- Reduce power < 79% N1 note: this could cause a rapid increase in engine RPM and RPM or ITT limits could be exceeded |
| 7. What would happen if the right engine speed switch was selected OFF during climb out on the CRJ 200? | this could cause a rapid increase in engine RPM and RPM or ITT limits could be exceeded |
| 8. When do you need continuous ignition? | 1) T/O & LNDG contaminated RWY 2) T/O with crosswind component >10 knots (200 only) 3) moderate or heavier rain 4) moderate or heavier turbulence 5) in vicinity of T-storms |
| 9. When will continuous ignition be automatically activated? | Stall: when high AOA is approached both ignition systems are energized until the airplane attitude is corrected |
| 10. When does the thrust lever auto-retard on the CRJ 200? | Whenever Thrust Reversers in transit -or- inadvertent deployment of TRs |
| 11. What does the UNLK light mean on the TR panel? | indicates reversers not locked. A TR emergency stow system is installed to stow an unlocked thrust reverser. Selecting the UNLK switchlight directs 14th-stage bleed air to the PDU to stow unlocked reverser |
| 12. L(R) REV UNSAFE caution message means? | a)Thrust Reverser is unsafe to arm in-flight b)TR lever deploy switches have failed in a commanded deploy state but thrust reversers are not locked and are not armed |
| 13. Normal N1 thrust is displayed on ED1 in what color? Flex Thrust? | Normal N1 = Cyan Flex N1 = Magenta |
| 14. When do we check engine oil, how much oil can you add? | 3 min - 2 hours after engine shutdown you can add up to 2 qts. if any of these limits are exceeded then dry motoring is required |
| 15. if needed, when can you add oil? | 15 min - 2 hours after shutdown |
| 16. When do you have to dry motor after adding oil? | 1) you add more than 2 qts oil 2) oil has been added after 2 hours from shutdown 3) airplane has been cold soaked for >8hrs at <= -30 degC. dry motor for 60 sec |