Essential knowledge quiz JP3 Flashcards
- Engine limitations (RPM, JPT, PSI, time) - Ground idle
40-45
600
8
Nil
- Engine limitations (RPM, JPT, PSI, time) - Max continuous
95
655
20
Nil
- Engine limitations (RPM, JPT, PSI, time) - Intermediate
98
695
20
50min
- Engine limitations (RPM, JPT, PSI, time) - Full Power
100% Stationary, 101.5% in flight
725
20
20
- What is the max JPT during start up and for how long?
800 Degrees, 5 secs
Report maximum temp reached and time above 800
- What must you do if JPT accelerates rapidly through 650 degrees during start up?
Likely to exceed 800 degrees, Close HP cock, allow engine to run down completely, attempt further start using a different power supply
- / 5. / 6. What would you do if the starter button remains in and the starter light remains on after the engine reaches idle?
Switch off starting master switch
(if button jumps out and light goes off, aircraft may be flown but fault must be reported after landing)
(if button jumps out but light stays on, shut down)
- What is the maximum time the fuel valve test light should remain illuminated
3 seconds
should go out after 2
- If one of the fuel test valves fails to illuminate when conducting the test after engine start…
…the sortie must be terminated and aircraft placed u/s
- Above what stabilised RPM must engine overspeed be recorded and reported
101.5%
- What is he maximum acceptable engine over-swing RPM?
103% (record overswings above 103%)
- What is the maximum acceptable oil pressure fluctuation?
Min at ground idle: 8 psi
Min in flight to avoid damage: 5 psi
Min at max cont RPM: 20 psi
Normal at max cont RPM: 30 psi
Max: 35psi
Fluctuations up to 3psi acceptable at pressures over 10psi
- What is the JPT and oil pressure you would expect to see flying straight and level at 2,000ft at 85% RPM?
600-655
20-30psi
- With full foot force applied what is the minimum acceptable pressure to each brake?
900psi
- Up to what RPM must the brakes hold the aircraft?
90% RPM
- What is the minimum hydraulic pressure for taxiing the aircraft?
1250 psi
- Max speed limit for lowering the undercarriage?
140 kts
- Max speed limit for raising the undercarriage?
125 kts
- Max speed for flight with undercarriage locked down?
140 kts
- Speed limit lowering flap from up to take off?
150 kts