Difference Training
This section describes specific features and changes of the Super27 mod compared to the original 727.
High Idle Mode
The Approach Idle System is provided to improve throttle response during the approach phase by increasing idle thrust on the pod engines (No. 1 and No. 3).
When the nose landing gear is down and locked in flight, the system automatically commands the approach idle valve in each affected engine fuel control to increase N2 by approximately 10 percent above the normal idle setting. This ensures faster engine acceleration when thrust is required close to the ground.
Following touchdown, the system deactivates automatically. Within approximately five seconds after the left main gear is on the ground, the pod engines revert to normal ground idle.
A cockpit indication is provided on the forward panel by means of the APPROACH IDLE INOP light. This light illuminates whenever there is a disagreement between the electrical inputs supplied to the approach idle system and the position of the approach idle valves on the engines.
Auto Spoilers
To arm the speed brakes, lift the lever and pull it back about one inch. Once armed, the lever will automatically move to the UP position at touchdown, deploying all flight and ground spoilers. If the automatic function fails, you must manually extend the speed brakes after landing, during a go-around after touchdown, or in the case of a rejected takeoff.
TAXI (IDLE REVERSE)
Whenever the No. 1 & 3 reverse thrust levers are moved from the down position, the speed brake lever is mechanically raised out of the DOWN detent. The speed brake lever will return to the DOWN detent when the reverse levers are closed.
REJECTED TAKEOFF
When the No. 1 & 3 reverse thrust levers are raised, the speed brake handle will rise out of the DOWN detent and if main gear speed is greater than 60 knots, will automatically drive to the UP position.
Cruise Planning
To determine the optimal performance in flight, use the following table. We’re assuming a speed of Mach 0.80. To find the optimal cruise altitude, follow these steps:
Check the gross weight
Follow the selected column down until you reach the grey-highlighted cell. This cell shows the EPR, the range (in nm per 1000 lb), and the maximum true air temperature for that EPR
From the grey cell, move left to the FL column. This indicates the optimal cruise altitude in thousands of feet.
Autopilot
If you use the EFIS it will come with the new autopilot system. A detailed description can be found here.
Common Mistakes
To arm altitude select mode you have to actively press ALT button when in any vertical mode. It won't automatically arm by just enabling a vertical mode.
VNAV will descend according to the altitude profile of the GNS-XLS. If you want to interrupt the profile with your own altitude constraint, you must select the altitude and press ALT button to arm ALTS.
The pitch wheel controls the preselected airspeed when IAS is active.
Key Binding
INCREASE/DECREASE VERTICAL SPEED
VERT SPEED
(ALT HOLD not engaged)
Changes pitch to achieve +/- 100 ft/min
PITCH HOLD
Changes pitch to achieve approximately + 100 ft/min
INCREASE/DECREASE AUTOPILOT REFERENCE AIRSPEED
IAS HOLD
Changes the preselected speed on airspeed tape
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