Federal Aviation Administration, DOT

Pt. 60, App. B

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5. ALTERNATIVE DATA SOURCES, PROCEDURES,
AND INSTRUMENTATION: LEVEL 6 FTD ONLY
a. Sponsors are not required to use the alternative data sources, procedures, and instrumentation. However, a sponsor may
choose to use one or more of the alternative
sources, procedures, and instrumentation described in Table B2F.
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BEGIN INFORMATION
b. It has become standard practice for experienced FTD manufacturers to use such
techniques as a means of establishing data
bases for new FTD configurations while
awaiting the availability of actual flight test
data; and then comparing this new data with
the newly available flight test data. The results of such comparisons have, as reported
by some recognized and experienced simulation experts, become increasingly consistent
and indicate that these techniques, applied
with appropriate experience, are becoming
dependably accurate for the development of
aerodynamic models for use in Level 6 FTDs.
c. In reviewing this history, the NSPM has
concluded that, with proper care, those who
are experienced in the development of aerodynamic models for FTD application can
successfully use these modeling techniques
to acceptably alter the method by which
flight test data may be acquired and, when
applied to Level 6 FTDs, does not compromise the quality of that simulation.
d. The information in the table that follows (Table of Alternative Data Sources,
Procedures, and Information: Level 6 FTD
Only) is presented to describe an acceptable
alternative to data sources for Level 6 FTD
modeling and validation, and an acceptable
alternative to the procedures and instrumentation found in the flight test methods traditionally accepted for gathering modeling and
validation data.
(1) Alternative data sources that may be
used for part or all of a data requirement are

the Airplane Maintenance Manual, the Airplane Flight Manual (AFM), Airplane Design
Data, the Type Inspection Report (TIR), Certification Data or acceptable supplemental
flight test data.
(2) The NSPM recommends that use of the
alternative instrumentation noted in Table
B2F be coordinated with the NSPM prior to
employment in a flight test or data gathering effort.
e. The NSPM position regarding the use of
these alternative data sources, procedures,
and instrumentation is based on three primary preconditions and presumptions regarding the objective data and FTD aerodynamic program modeling.
(1) Data gathered through the alternative
means does not require angle of attack
(AOA) measurements or control surface position measurements for any flight test. AOA
can be sufficiently derived if the flight test
program insures the collection of acceptable
level, unaccelerated, trimmed flight data.
Angle of attack may be validated by conducting the three basic  - fly-by -  trim tests.
The FTD time history tests should begin in
level, unaccelerated, and trimmed flight, and
the results should be compared with the
flight test pitch angle.
(2) A simulation controls system model
should be rigorously defined and fully mature. It should also include accurate gearing
and cable stretch characteristics (where applicable) that are determined from actual
aircraft measurements. Such a model does
not require control surface position measurements in the flight test objective data for
Level 6 FTD applications.
f. Table B2F is not applicable to Computer
Controlled Aircraft FTDs.
g. Utilization of these alternate data
sources, procedures, and instrumentation
does not relieve the sponsor from compliance
with the balance of the information contained in this document relative to Level 6
FTDs.
h. The term  - inertial measurement system -  allows the use of a functional global
positioning system (GPS).
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TABLE B2F - ALTERNATIVE DATA SOURCES, PROCEDURES, AND INSTRUMENTATION LEVEL 6 FTD

kpayne on VMOFRWIN702 with $$_JOB

QPS Requirements
The standards in this table are required if the data gathering methods described in paragraph 9 of Appendix
B are not used.
Objective test reference number
and title

Alternative data sources, procedures, and instrumentation

1.b.1. ................................................
Performance.
Takeoff.
Ground acceleration time.

Data may be acquired through a synchronized video recording of a
stop watch and the calibrated airplane airspeed indicator. Handrecord the flight conditions and airplane configuration.

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Information

Notes
This test is required only if
RTO is
sought.