kpayne on VMOFRWIN702 with $$_JOB

VerDate Sep<11>2014
Jkt 247047
PO 00000
Frm 00371
Sfmt 8002

361

Fmt 8010
Q:\14\14V2.TXT

5. ................

Sound system

PC31

Basic requirements

Pt. 60, App. C

The sponsor will not be required to repeat the helicopter tests (i.e., tests 5.a.1. through 5.a.8. (or 5.b.1. through 5.b.9.) and
5.c., as appropriate) during continuing qualification evaluations if frequency response and background noise test results are
within tolerance when compared to the initial qualification evaluation results, and the sponsor shows that no software
changes have occurred that will affect the helicopter test results. If the frequency response test method is chosen and fails,
the sponsor may elect to fix the frequency response problem and repeat the test or the sponsor may elect to repeat the helicopter tests. If the helicopter tests are repeated during continuing qualification evaluations, the results may be compared
against initial qualification evaluation results or helicopter master data. All tests in this section must be presented using an
unweighted 1-3-octave band format from band 17 to 42 (50 Hz to 16 kHz). A minimum 20 second average must be taken at
the location corresponding to the helicopter data set. The helicopter and flight simulator results must be produced using
comparable data analysis techniques.
5.a. .............

Federal Aviation Administration, DOT

16:30 Jun 25, 2019

(1) Static helicopter dimensions as follows:
(i) Horizontal and vertical distance from main landing
gear (MLG) to glideslope
reception antenna.
(ii) Horizontal and vertical distance from MLG to pilot-s
eyepoint.
(iii) Static flight deck cutoff
angle.
(2) Approach data as follows:
(i) Identification of runway.
(ii) Horizontal distance from
runway threshold to
glideslope intercept with
runway.
(iii) Glideslope angle.
(iv) Helicopter pitch angle on
approach.
(3) Helicopter data for manual testing:
(i) Gross weight.
(ii) Helicopter configuration.
(iii) Approach airspeed.
If non-homogenous fog is
used to obscure visibility,
the vertical variation in horizontal visibility must be described and be included in
the slant range visibility
calculation used in the
computations.