MH60T Trivia #351-375

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? 

351. Q: Trigger for a #1/2 ENG HSS FAIL caution? 
A: Np is greater than Nr by more than 3% and transmitted torque is below 
10%. 

352. Q: Trigger for a T/R QUADRANT caution? 
A: One or both switches indicating cables to the tail rotors servo are broken. 

353. Q: Trigger for a #1 T/R SERVO caution? 
A: Low pressure at the tail rotor servo. 

354. Q: Trigger for a BOOST SERVO OFF caution? 
A: Collective and/or yaw boost pressure low. 

355. Q: Trigger for a STABILATOR caution? 
A: Stab in manual mode. 

356. Q: Trigger for a #1/2 PITOT HEAT caution? 
A: Low or no heat on pitot tube. 

357. Q: Trigger for a MR DE-ICE FAIL caution? 
A: Total open circuit, system automatically turns off. 

358. Q: Trigger for a MR DE-ICE FAULT caution? 
A: Open circuit on any zone element, will operate in degraded mode. 

359. Q: Trigger for a TR DE-ICE FAIL caution? 
A: Total open circuit, system automatically turns off. 

360. Q: IFF (momentary) caution? 
A: Transponder did not respond to mode 4 or mode 5 interrogation. 

361. Q: IFF (Steady) caution? 
A: Codes not loaded and mode 4 or 5 on. 

362. Q: APU GEN ON advisory? 
A: APU GEN is the only generator providing AC power *** FM says, “Indicates the APU AC electrical generator is on and operating normally and supplying power to the AC distribution system.” 

363. Q: PARKING BRAKE ON advisory? 
A: Indicates the parking brake handle has been pulled up. 

364. Q: Turning the LPCAP knob to BU (back up) does what? 
A: Switches ICS from digital to analog. If the BA, FM or EAR stations switch to back up, radios are not affected. If the P or CP LPCAP goes to BU, radio function will be degraded (see Flight Manual for each scenario). In back up, ICS volume will be fixed with press-to-talk (PTT) capability only. Furthermore, RADALT aural warnings will be lost for any LPCAP in back up. If water intrusion in the digital ICS system is causing a squeal, switching the affected ICS LPCAP to back up analog mode may eliminate the noise. Depending on the situation, this may warrant the above loss of functionality.

365. Q: Pressing ICS CALL on the cyclic does what? 
A: Overrides all transmissions and receptions regardless of settings. 

366. Q: Pressing the CALL button on the LPCAP does what? 
A: This button allows an operator to transmit over both ICS channels (ICS and PVT) at a higher volume. 

367. Q: What does the mixing unit do? 
A: Collective to yaw. Collective to roll. Collective to pitch. Yaw to pitch. Another mixing function is controlled by AFCS – Collective/Airspeed to yaw (this is electrical when trim is engaged). 

368. Q: What happens to the Anti-ice valve when the solenoid is not powered? 
A: It opens. 

369. Q: Autopilot functions (12 total)? 
A: 1. Attitude hold (below 50 kts). 2. Airspeed hold (above 50 kts.). 3. Heading hold. 4. Hover augmentation/gust alleviation. 5. Turn coordination (above 50 kts.). 6. Maneuvering stability. 7. Baralt hold. 8. Radalt hold. 9. Auto approach. 10. Coupled hover. 11. Crew hover. 12. Auto departure. 

370. Q: Autopilot functions requiring SAS 1 or 2 (4 total)? 
A: 1. Attitude hold (below 50 kts.). 2. Kk Airspeed hold (above 50 kts.). 3. Heading hold. 4. Turn coordination (above 50 kts.). 

371. Q: Autopilot function requiring SAS 2 (8 total)? 
A: 1. Hover augmentation/gust alleviation. 2. Maneuvering stability. 3. Radalt hold. 4. Baralt hold. 5. Auto approach. 6. Coupled hover. 7. Crew hover. 8. Auto departure (some H60 pilots like to demo that auto departure works without SAS 2 – it does to a degree. However, RADALT hold does not engage at the completion of the departure and in more extreme winds, a nose down attitude will be maintained throughout the acceleration that can eventually result in a high rate of descent). 

372. Q: Requirements for SAS preflight check? 
A: WOW, rotor brake on, torques equal to zero, computer power on, EGIs/INUs aligned (AFCS degraded off). 

373. Q: Conditions most likely to induce vortex ring state (power settling)? 
A: The effect of vortex ring state is measurable at rates of descent of 700 fpm or more w/ 0-20 kts. IAS. VRS is most likely to be induced at a rate of descent of 1500 fpm w/ 5-10 kts. IAS. VRS can result in 6000 fpm rate of descent. 

374. Q: Minimum static rollover angle 
A: 28°. 

375. Q: Maximum angle that can be negotiated during a cross slope landing or takeoff (e.g., FM definition of critical rollover angle)? 
A: 12°.