TM 1-1510-224-MTF
23.
Right ENVIRO & PNEU BLEED AIR switch - PNEU ONLY.
24.
Slowly retard the left POWER lever to flight idle and determine
the minimum N1 required to maintain cabin pressure. Verify
that cabin pressurization is maintained down to flight idle N1.
25.
Right ENVIRO & PNEU BLEED AIR switch - ON.
26.
Cabin pressurization controller - Set to 500 feet above field
elevation.
*TRIM AND RIGGING
Check as follows:
In smooth air, at cruise power, the aircraft will fly hands off, straight and
level with the ailerons symmetrically aligned at the trailing edge and the
aileron adjustable tab set to zero.
*MAXIMUM TGT/N1 AVAILABILITY
Ensure that sufficient POWER lever travel is available at 16,000 feet to
produce a TGT of 840C or an N1 of 104%. Check that maximum TGT
or N1 is available at the maximum POWER lever position as follows:
NOTE
The only requirement of the maximum TGT/N1 id to
verify that it is possible to obtain maximum
allowable gas generator RPM (N1) or reach the TGT
limit with the POWER levers in the full forward
position. If during the test the TGT limit or N1 limits
is obtained the check is completed.
1.
Altitude - 16,000 feet pressure altitude.
2.
PROP levers - Set 1700 RPM.
3.
Ice vanes - Retracted.
4.
ENVIRO & PNEU BLEED AIR valve switches (2) - ON.
5.
Airspeed - As required.
4-3
