Sec tion VI
WEIGHT AND BAL ANCE DATA
6-1. IN TRO DUC TION
1. All he li cop ters are de signed for cer tain limit loads and bal ance
con di tions. Changes in equip ment which af fect the empty
weight and empty weight cen ter of grav ity must be en tered on
the Re pair and Al ter ation Re port FAA form 337, in ac cor dance
with Fed eral Air Reg u la tions, which shall then be come part of
the he li cop ter file.
Note
: Lat eral and lon gi tu di nal cen ter of grav ity must
be con trolled. Re fer to Flight Man ual addendums and
sup ple ments sup plied with kits for spe cial in struc tions
re gard ing weight and bal ance data.
Note:
All sam ples and ex am ples shown in this sec tion
are based on 33 gal lon fuel tank to tal ca pac ity and/or 66
gal lon to tal ca pac ity fuel sys tem. Use ac tual tank ca -
pac i ties from your air craft when fig ur ing your weight
and bal ance.
6-2. WEIGHT AND BAL ANCE CHAR AC TER IS TICS
1. The re moval or ad di tion of fuel or equip ment re sults in changes
to the cen ter of grav ity and weight of the air craft, and the per -
mis si ble use ful load is af fected ac cord ingly. Ef fects of these
changes must be in ves ti gated in all cases to elim i nate pos si ble
ad verse ef fects on the air craft’s flight char ac ter is tics. The lon -
gi tu di nal ref er ence “Da tum” is lo cated 100 inches for ward of
the cen ter line of the main ro tor (see Fig ure 6-2). For con ve -
nience, sta tion 100 is marked on the air craft. Sta tion num bers
cor re spond to an inch scale and may be used to lo cate equip ment
on the air craft. The lat eral “Da tum” is the cen ter line of the air -
craft through the main ro tor. The weight and bal ance char ac ter -
is tics are as fol lows:
a. Max i mum Gross Weight : 1750 lbs
Reissued: 16 Jan 2019 6-1
Weight and Balance
Pilot's Flight Manual
SCHWEIZER
Model 269C-1 Helicopter
CSP book 2..indd 121 8/4/19 12:53 PM
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