MH60T Trivia #251-275
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?
251. Q: Mechanical signals to HMU?
A: PCLs, Power Available Spindle (PAS), Collective, Load Demand Spindle (LDS).
252. Q: Starter disengages at what Ng?
A: 52-65%.
253. Q: How do you overcome a malfunction of the starter speed switch?
A: Hold down the starter button.
254. Q: How do you manually disengage the starter?
A: Pull down on the PCL.
255. Q: What parameters are required from the operating engine to do a cross- bleed start?
A: 90% Ng and 100% Nr and engine anti-ice light out.
256. Q: No. 1 Engine will not start without what bus?
A: DC essential bus is required to open the starter valve (with no AC power- APU or external power, the #1 engine is the only engine you can initially start – this situation would necessitate a “buddy start”).
257. Q: No. 2 Engine needs which bus powered to start?
A: No. 2 DC Primary bus (AC power is needed for the No. 2 DC Primary bus to be powered).
258. Q: If nothing happens when you select APU on, what can you try?
A: Pressing the manual override lever on the APU accumulator.
259. Q: # 1/2 ANTI-ICE ON means what?
A: The signal from a switch tells you the position of the valve. The valve should be open when you are below approximately 90% Ng (corrected for temp) or you are above 90% Ng with the engine anti-ice switch on.
260. Q: # 1/2 INLET AI ON advisory means what?
A: Engine inlet is above 93°C.
261. Q: Expected rise in TGT when turning engine anti-ice on?
A: 30-100°C.
262. Q: Temps. you shall see the INLET AI ON advisory, may/may not, shall not?
A: The INLET AI ON advisory may or may not be displayed between 4-13°C. If OAT is greater than 13°C, the INLET AI ON shall not be displayed.
263. Q: ENG 1/2 OUT warning lights illuminate when?
A: Ng below 55%, weight off wheels.
264. Q: How does the loss of the alternator’s Ng winding affect engine indications?
A: Ng speed signal to the Engine Instrument and Crew Alert System (EICAS). Loss of this winding will result in the loss of the Ng display on the EICAS page, the engine display for the affected engine being crossed out in red (red X over engine instruments) and the respective engine out Master Warning light illuminating. TGT, Np and Torque will still be in normal operating ranges.
265. Q: Pulling the APU T-handle does what 6 things?
A: 1. Removes electrical power from the APU fuel shutoff valve. 2. Removes power from the engine fuel prime valve, allowing both valves to close. 3. Removes power from the prime boost pump. 4. Sends a stop signal to the ESU. 5. Arms the fire extinguisher systems. 6. Positions the extinguisher directional control valve to APU.
266. Q: The APU ESU will shut down the APU except for what condition?
A: APU Oil Temp high.
267. Q: The APU GEN ON advisory means what?
A: The APU Generator is the only generator providing power.
268. Q: APU GEN Caution can indicate what 3 things?
A: 1. APU generator has failed. 2. APU is operating but the generator is turned off. 3. APU is starting with the generator on but is not up to speed yet.
269. Q: Back-up pump runs for how long after APU start?
A: At least 90 seconds and until the APU ACCUM LOW advisory is out.
270. Q: Pulling an engine T-handle does what 2 things?
A: 1. Arms the extinguishing system for that engine. 2. Mechanically moves the fuel selector off.
271. Q: Does the main transmission have an impending bypass button?
A: Yes.
272. Q: If the main transmission impending bypass button is popped in flight, what do you do?
A: Flight can be continued.
273. Q: If the main transmission impending bypass button is popped on the ground?
A: Maintenance action is required before flight.
274. Q: Anti-flap restraints are pulled out by centrifugal force above what Nr?
A: 35% Nr.
275. Q: Droop stops are pulled out by centrifugal force above what Nr?
A: 55-60% Nr.