Table 2 Airframe Exceedances
Limitation
Abbreviation Unit
Trigger
Exceed-
ance
range
Maintenance Action
Max landing
weight
MLW
kg
Pilot report ≤4500
None
≤4725
12-B-05-50-01-00A-282A-A or 12-
B-05-50-01-00A-282B-A
>4725
Contact Pilatus¹
OVER
PRES-
SURE
CPCS pressure
ΔP
psi
Pilot report N/A
Contact Pilatus¹
Contact Pilatus Aircraft Ltd¹ - when you contact Pilatus give a detailed report of the aircraft exceedance.
* - Read the allowable load factor from the refinement chart using the gross weight and fuel weight to determine
the load factor ratio (R) = effective/allowable load factor.
3
Refinement Charts
It is possible to refine the positive and negative load factors used to determine if an exceedance is real. This
requires the following information:
−
Aircraft take-off weight
−
Fuel weight at take-off and at the time of the exceedance
−
The peak load factor recorded in the Aircraft data.txt log file.
3.1
Positive Load Factor
Obtain the aircraft gross weight and fuel weight at the time of the exceedance.
Interrogate the Aircraft data.txt log file to determine the peak load factor, refer to AMM 12-B-45-45-00-00A-551A-A.
This load factor is designated g actual.
Note
The ADAHRS log files record g where 0g implies straight and level flight. Therefore you must use a correction of
-1.0g for all recorded g values.
Determine the allowable g using the chart, aircraft gross weight and fuel loading at the time of the exceedence.
This load factor is designated g allowable.
Determine the ratio R by dividing g actual by g allowable.
Refer to Table 2 for the exceedance range and the required maintenance action.
3.2
Negative Load Factor
Obtain the aircraft gross weight and fuel weight at the time of the exceedance.
Interrogate the Aircraft data.txt log file to determine the peak load factor, refer to AMM 12-B-45-45-00-00A-551A-A.
This load factor is designated g actual.
PC-12/47E AMM Doc No 02300, ISSUE 01 REVISION 27 MSN 545, 1001-1719, 1721-1942
12-B-AM-00-00-00-I
UNCLASSIFIED
Effectivity: All
12-B-05-50-00-00A-018A-A
UNCLASSIFIED
04.12.2021 Page 4