Installation Instructions

GTN 6XX/7XX AML STC Installation Manual 190-01007-A3
Page 3-44 Rev. 4
Date: ______________ Tail No.:______________
Power Sources
Item Number
Installed
Voltage
(DC Volts)
Manufacturer Model
Number
Alternator
Battery
Battery Capacity: x 0.75 (derating factor) = ________ Ah x 60 min = ________ A-min [i]
Current drawn during Normal Cruise (amps): ________ (c) enter current calculated in step 13. above
Cruise consumption during recognition: (c) A x 5 min = ________ A-min [ii]
Emergency Landing Current (amps): _________ (e) enter current measured in step 15. above
Emergency Landing Consumption:
(e) A x 10 min = ________ A-min [iii]
Capacity remaining for cruise: ([i] – [ii] – [iii]) ________ - ________ - ________ = ________ A-min [iv]
Emergency Cruise Current (amps): _________ (d) enter current measured in step 14. above
Emerg Cruise Duration ([iv] / (d) ): ____________ [iv] / ___________ (d) = __________ min [v]
The total duration of flight on emergency power is determined by adding the time for recognition of the failure
(5 minutes) to the time for emergency cruise (calculated above) to the time for landing (10 mins).
Total Duration for Flight on Emergency Power (5 + [v] + 10) = ________ min [vi]
Verify that the total flight duration on emergency power [vi] is ≥ 30 minutes (for a typical Part 23 aircraft).
Assumptions:
1. Most severe operating condition is considered to be _________________________________________
2. Motor load demands are shown for steady state operation and do not include inrush current draw.
3. Load shedding is accomplished (how)___________________________________________within five minutes of
warning annunciation.
Measured loads using __________________________________________________________________
Figure 3-18. Blank Emergency Power Operation Calculation Form