14 CFR Ch. I (1-1-19 Edition)

The airplane reference point for approach
measurements is the instrument landing system (ILS) antenna. If no ILS antenna is installed an alternative reference point must
be approved by the FAA.
A36.9.3 Simplified method of adjustment.
A36.9.3.1 General. As described below, the
simplified adjustment method consists of applying adjustments (to the EPNL, which is
calculated from the measured data) for the

differences between measured and reference
conditions at the moment of PNLTM.
A36.9.3.2 Adjustments to PNL and PNLT.
(a) The portions of the test flight path and
the reference flight path described below,
and illustrated in Figure A36-6, include the
noise time history that is relevant to the
calculation of flyover and approach EPNL.
In figure A36-6:

798

VerDate Sep<11>2014

12:50 Apr 30, 2019

Jkt 247046

PO 00000

Frm 00808

Fmt 8010

Sfmt 8002

Y:\SGML\247046.XXX

247046

ER08JY02.015</MATH>

spaschal on DSK3GDR082PROD with CFR

Pt. 36, App. A