MH60T Trivia #551-575

This trivia series distills over 20 years of flight manual study into 500+ focused questions and answers, posted in 25 question sets. It’s not a substitute for the manual, but rather an aid to facilitate study and strengthen airmanship. During your review, ask yourself: How is this operationally relevant? Do I need to memorize it, or just be familiar with it? Should I review more on this topic? 

551. Q: Anti-ice reduces power available?   
     A: Up to 18%.   

552. Q: ECS on HOT reduces power available?   
     A: Up to 5%.   

553. Q: ECS on COLD LOW flow reduces power available?    
     A: Up to 4%.   

554. Q: ECS on COLD HIGH flow reduces power available?   
     A: Up to 7%.   

555. Q: APU fuel burn?   
     A: 170 lbs./hr.  

556. Q: With anti-ice on, what is the increase in fuel burn?   
     A: Approximately 84 lbs./hr. (not calculated in charts).   

557. Q: With ECS on, what is the increase in fuel burn?   
     A: Approximately 20 lbs./hr. (included in calculated charts).   

558. Q: When must de-ice, anti-ice systems be turned on?   
     A: 5°C in visible moisture.   

559. Q: With “normal” ice build-up, possible torque increase?   
     A: Up to 14%.   

560. Q: An increase of how much torque should mean urgent consideration to leave icing?   
     A: 10%. (Note torque in level flight at a consistent altitude and airspeed to establish a torque baseline). 

561. Q: A increase of how much torque means exit icing conditions immediately or land ASAP?   
     A: 20%. (Note torque in level flight at a consistent altitude and airspeed to establish a torque baseline). 

562. Q: With all de-ice and anti-ice systems working, flight in what type of icing is allowed?     
     A: Light, moderate if mission urgency dictates.   

563. Q: Icing descriptions?    
     A: Light – easily handled by ac de-ice/anti-ice systems.  Moderate – ac de-ice/anti-ice systems are at capacity. Severe – ac de-ice/anti-ice cannot keep up.   

564. Q: When will the ECS always shutdown?   
     A: Starting engines, contingency power on.   

565. Q: When will ECS shutdown?   
     A: When air source is in engine, TGT above 851, anti-ice is turned on, de-ice is  in auto and ice is detected-anti ice on, an underpressure exists.   

566. Q: Main Rotor de-ice is powered by what bus?   
     A: Monitor bus.   

567. Q: Tail Rotor de-ice is powered by what bus?  
     A: Secondary bus. 

568. Q: Main rotor de-ice needs what generators working?   
     A: Any two generators.   

569. Q: Flight is allowed in what turbulence?   
     A: Should avoid moderate or greater.  

570. Q: Turbulence airspeeds?   
     A: Light: blade stall – 10 knots. Moderate – 15 knots. 

571. Q: ITO procedure?   
     A: Climb power, wings level, three positive rates of climb (radalt, baralt, VSI) through 50′, nose 5°down.  

572. Q: Any two generators power which AC buses?   
     A: All five (#1 and #2 primary, AC ess, sec, monitor).   

573. Q: Which buses are powered with only one main generator and back up pump off?  
     A: All except the monitor.  

574. Q: Which buses are powered with only one main generator and back up pump on?   
     A: All except the monitor and secondary buses. 

575. Q: The monitor bus powers what items?   
     A: The main rotor de-ice.