AlphaSim PBM-5A Mariner Procedures

For performance and aircraft specifications see the aircraft menu.

Engine Start

Use Ctrl-E (autostart) to start the aircraft, or:

1. Set parking brake.
2. Set throttle to IDLE.
3. Turn OFF Avionics and light switches.
4. Turn on Master Battery switch.
5. Ensure fuel supply is on (advance mixture control fully or press Ctrl-Shift-F4).
6. Bring up throttle panel.
7. Set propeller control to HIGH RPM.
8. Start Engine 1 using the engine start switch.
9. Monitor oil pressure and temperature.
10. Repeat for remaining engine.

Takeoff

1. Make sure fuel is set to main tank.
2. Set elevator trim to +4 degrees (nose-up).
3. Set flaps to full down (30 degrees).
4. Apply full power smoothly.
5. Pull back on the stick slightly to lighten the nose at about 75 KIAS.
6. Lift off at about 85-90 KIAS.

Climb

1. Retract flaps in stages before reaching 110 KIAS.
2. Set climb power to 42" and 2600 RPM.
3. Climb at 120 KIAS.
4. Advance throttles as needed above critical altitude to maintain power.

Cruising

Altitude | Boost | RPM | KIAS | KTAS | Fuel Flow | Nautical mpg
1,500 feet | 28" Hg | 2000 | 120 | 122 | 172 gph | 0.65
9,500 feet | 30" Hg | 2000 | 138 | 159 | 224 gph | 0.65

Landing - Water

1. Set propeller to 2600 RPM and adjust throttle as required.
2. Approach the landing area at about 120 KIAS.
3. Deploy flaps in stages once airspeed is reduced to 108 KIAS.
4. A flaps-down gliding speed of 100 KIAS should be established and the aircraft trimmed "hands-off."
5. Reduce descent rate to 200 fpm at 85 KIAS.
6. Touch down gently at about 75 KIAS, keeping the nose up to avoid porpoising.
7. Retract flaps after touchdown.

Landing - Airstrip

1. Set propeller to 2600 RPM and adjust throttle as required.
2. Approach the airfield at about 120 KIAS.
3. Deploy flaps in stages once airspeed is reduced to 108 KIAS.
4. A flaps-down gliding speed of 100 KIAS should be established and the aircraft trimmed "hands-off."
5. Lower landing gear on downwind leg and check for down and locked.
6. Cross the threshold at 85 KIAS.
7. Touch down gently at about 75 KIAS, holding the nose off as long as possible.
8. Retract flaps after touchdown and brake gently as required.