T-39 FLIGHT PREPARATION
(In the event of a DD-175 flight, the crew will meet at Base Operations at the brief time;
otherwise, the crew will meet in the squadron briefing rooms).
The DOD Flight Information Publications (FLIP) contains information for preflight planning
and enroute use. Prior to the flight, aircrew members should consult the General Planning (GP),
Area Planning (AP), and Planning Change Notices for information on items needed during flight,
such as IR and VR routes, Supplemental Airport Remarks, and MOA boundaries.
Appropriate inflight publications must be carried on every flight. Students are required to
have any publications that may be used during a flight except for General Planning and the Area
Planning publications. If you are going on an out-and-in or cross-country you will need Area
Charts, High Altitude Charts, Low Altitude Charts covering the entire route of flight, High and
Low Altitude Approach Plates, and STARs for your destination. Ensure you have publications
for divert fields along your route.
Flight Logs (Jet Cards)
Flight logs are used to plan fuel consumption, ETA's, and collect Aerodrome information
for the destination, alternate, and emergency divert fields. Flight logs are not used for
enroute navigation. Each student will bring a flight log for the planned route of flight. Flight
log construction is the same as previously learned with a few exceptions:
ETEs may be figured to either the nearest minute or half minute.
Fuel figures for the T-39 aircraft can be divided into three parts: normal thrust climb,
enroute fuel flow, and divert requirements.
Start fuel is the max usable fuel, 7200 lbs (JP-5). Fuel reserve requirements, as indicated
by OPNAVINST 3710.7 are 20 min at 10,000 feet MSL or 10% of required fuel, whichever
is higher. This equates to 600 lbs based on a fuel flow of 1800 PPH at 10,000 feet MSL,
175 KIAS, or 10% of required fuel. Plan 400 lbs for start, taxi, takeoff, and each planned
The 400 lbs for start, taxi, and takeoff is added to L/O fuel on the front of flight logs and
omitted on the back.
Plan your alternate airfield profiles for an ANAV/AN flight as follows:
From the destination IAF to alternate IAF at last cruising altitude, airspeed, and fuel flow.
From the destination IAF to alternate IAF using the destination IAF altitude and
maximum range airspeed. At NPA, this is 16,000 feet, 300 TAS and 2200 PPH.
Bingo profile, destination airfield to alternate airfield.