Getting to Grips with Aircraft Weight and Balance(129)

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(1) When not included in passenger weight
E : Actual gross weight calculation
1 -Total Traffic Load = Total outgoing deadload (D10) + Total cabin baggage weight(1) (D10)
+ Total outgoing passenger number (D10) x passenger weight(2)
2 -ZFW = Total traffic Load (E1) + Dry operating weight (B1)
3 -TOW = ZFW (E2) + Takeoff fuel (B2)
4 -LW = TOW (E3) - Trip fuel (C4)
5 -Underload before LMC(3) = Allowed traffic load (C6) . Total traffic load (E1)

(1)
 Irrelevant when cabin baggage weight is included in the passenger weight

(2)
 Passenger weight with or without baggage weight (company policy)

(3)
 The underload before LMC represents the extra weight that can be added at the last minute, while structural limitations are still respected.

 

C. Operational Loading Documents

F : Last minutes changes (LMC)
As the loadsheet must reflect the actual loaded state of the aircraft before departure, it is often
necessary to adjust it after completion. This is the aim of Last Minute Changes (LMC).
Generally, only changes in the weight or distribution of the traffic load (passengers, baggage,
cargo and mail) should be mentioned in the LMC box. Nevertheless, any deviation of the DOW
conditions could be added as well.

1 -Dest : Destination of LMC
2 -Specification : Kind of LMC (number of passengers, weight of deadload)
3 -Cpt: Cabin section or cargo compartment in which the LMC is added
4 -+/-: Indication of on or off-load
5 -Weight : Weight increment or decrement for the specific LMC
6 -LMC Total +/- : Sum of all LMC weights (on or off-load)

The total weight increase due to LMC (F6) must not exceed the underload before LMC (E5). No subsequent corrections are to be made to the previously calculated ZFW (E2), TOW (E3) and LW (E4), provided the weight increment remains below a pre-determined tolerance. This tolerance should be established per aircraft type (company policy). When the tolerance is exceeded, a new loadsheet must be issued.
G : Supplementary information and notes
1 -SI: supplementary information transmitted with LDM (free format)
2 -Notes: Information not transmitted with LDM
3 -Balance condition: balance conditions according to carriers requirement (MACZFW,

MACTOW,…) as per AHM 050.
4 -Seating conditions: according to carrier requirement 
5 -Total passengers: Total number of passengers on board (including LMC)
6 -Prepared by: Loadsheet agent‘s signature
7 -Approved by: Captain‘s  signature

LOADING LOADING
C. Operational Loading Documents

4.3. EDP Loadsheet
With computerized Load control systems, cargo, mail and passenger boarding information are interconnected. EDP loadsheets can be issued very quickly at the last minute, generally besides the aircraft.  That‘s why it is advisable to adjust passenger and load figures before the final version is printed or sent to the aircraft. This enables to avoid Last Minute Changes on the loadsheet. According to IATA AHM 517, an EDP loadsheet must look like the following example:
　
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