MH60T Trivia #176-200
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?
176. Q: ECS on HOT reduces power available?
A: Up to 5%.
177. Q: ECS on COLD LOW flow reduces power available?
A: Up to 4%.
178. Q: ECS on COLD HIGH flow reduces power available?
A: Up to 7%.
179. Q: APU fuel burn?
A: Approximately 170 lbs./hr.
180. Q: Engines at idle?
A: Approximately 360 lbs./hr.
181. Q: Engines in fly (flat pitch)?
A: Approximately 540 lbs./hr.
182. Q: Anti-ice on increase in fuel burn?
A: 84 lbs./hr. dual eng. – about 45 lbs./hr./eng (when fuel planning, using flight manual charts read the criteria – anti-ice fuel burn is NOT typically accounted for in charts).
183. Q: Range decrease with engine anti-ice on?
A: About 8% at max range (multiply by 0.92).
184. Q: ECS on fuel burn?
A: Approximately 20 lbs./hr. (when fuel planning using flight manual charts read the criteria – this is typically accounted for in charts).
185. Q: When must de-ice, anti-ice systems be turned on?
A: 5°C in visible moisture.
186. Q: With “normal” ice build-up, possible torque increase?
A: Up to 14%.
187. Q: An increase of how much torque should mean urgent consideration to leave icing?
A: 10%.
188. Q: An increase of how much torque means exit icing conditions immediately or land ASAP?
A: 20%.
189. Q: With all de-ice and anti-ice systems working, flight in what type of icing is allowed?
A: With fully operational anti-icing and de-icing equipment, the H-60 may be flown through known or forecast light icing. Except when mission urgency dictates otherwise, flight shall be planned to avoid areas forecast moderate or severe icing conditions (3710.1(series) says to consult the appropriate flight manual).
190. Q: With de-ice inop.. and eng. anti-ice working, the H60T may be flown through what type of icing?
A: Aircraft with operational anti-icing equipment, but inoperable de-icing equipment, may be flown through light icing if mission urgency dictates.
191. Q: On cold starts, when should the engine oil pressure be “in the green”?
A: Within five minutes after starting the engine.
192. Q: PSI when engine cold oil by-pass opens?
A: 120-180 psi.
193. Q: When is an OIL FILTER BYPASS caution acceptable?
A: It is normal for the OIL FILTER BYPASS caution to be displayed when starting an engine with oil temperatures below normal operating temperatures. When engine oil temperature reaches 38°C, the caution should go off.
194. Q: When will the ECS always shutdown?
A: Starting engines and when contingency power is on.
195. Q: When will ECS shutdown when air source is in engine?
A: TGT above 851, when anti-ice is turned on, when de-ice is in auto and ice is detected-anti ice on, when an under pressure exists.
196. Q: Placing the de-ice master switch in auto does what when ice is detected?
A: Placing the de-ice master switch in auto with all other anti-ice and de-ice switches in the off position will turn on windshield anti-ice, engine anti-ice and blade de-ice, when ice is detected.
197. Q: Main rotor de-ice is powered by what bus?
A: Monitor bus.
198. Q: Main rotor de-ice needs what generators working?
A: Any two generators.
199. Q: Tail rotor de-ice, co-pilot and center windshield anti-ice is powered by what bus?
A: Secondary bus.
200. Q: When will the TR de-ice be powered?
A: With only one main gen. and the back-up pump off (TR de-ice will be dropped when the back-up pump is turned on with only one main gen. operating or with only the APU gen. regardless of back up pump operation).