122 

14 CFR Ch. I (1–1–19 Edition) 

Pt. 60, App. A 

(3) Differences between the two sets of re-

sults, other than variations attributable to 
repeatability issues that cannot be ex-
plained, should be investigated. 

(4) The flight simulator should retain the 

ability to over-plot both automatic and man-
ual validation test results with reference 
data. 

E

ND

I

NFORMATION

 

lllllllllllllllllllllll

B

EGIN

QPS R

EQUIREMENTS

 

17. A

LTERNATIVE

D

ATA

S

OURCES

, P

ROCE

-

DURES

, 

AND

I

NSTRUMENTATION

: L

EVEL

A 

AND

 

L

EVEL

B S

IMULATORS

O

NLY

 

a. Sponsors are not required to use the al-

ternative data sources, procedures, and in-
strumentation. However, a sponsor may 
choose to use one or more of the alternative 
sources, procedures, and instrumentation de-
scribed in Table A2E. 

E

ND

QPS R

EQUIREMENTS

 

lllllllllllllllllllllll

B

EGIN

I

NFORMATION

 

b. It has become standard practice for ex-

perienced simulator manufacturers to use 
modeling techniques to establish data bases 
for new simulator configurations while 
awaiting the availability of actual flight test 
data. The data generated from the aero-
dynamic modeling techniques is then com-
pared to the flight test data when it becomes 
available. The results of such comparisons 
have become increasingly consistent, indi-
cating that these techniques, applied with 
the appropriate experience, are dependable 
and accurate for the development of aero-
dynamic models for use in Level A and Level 
B simulators. 

c. Based on this history of successful com-

parisons, the NSPM has concluded that those 
who are experienced in the development of 
aerodynamic models may use modeling tech-
niques to alter the method for acquiring 
flight test data for Level A or Level B sim-
ulators. 

d. The information in Table A2E (Alter-

native Data Sources, Procedures, and Instru-
mentation) is presented to describe an ac-
ceptable alternative to data sources for sim-
ulator modeling and validation and an ac-
ceptable alternative to the procedures and 
instrumentation traditionally used to gather 
such 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 Air-
plane Flight Manual (AFM), Airplane Design 
Data, the Type Inspection Report (TIR), Cer-
tification Data or acceptable supplemental 
flight test data. 

(2) The sponsor should coordinate with the 

NSPM prior to using alternative data 
sources in a flight test or data gathering ef-
fort. 

e. The NSPM position regarding the use of 

these alternative data sources, procedures, 
and instrumentation is based on the fol-
lowing presumptions: 

(1) Data gathered through the alternative 

means does not require angle of attack 
(AOA) measurements or control surface posi-
tion measurements for any flight test. How-
ever, AOA can be sufficiently derived if the 
flight test program ensures the collection of 
acceptable level, unaccelerated, trimmed 
flight data. All of the simulator time history 
tests that begin in level, unaccelerated, and 
trimmed flight, including the three basic 
trim tests and ‘‘fly-by’’ trims, can be a suc-
cessful validation of angle of attack by com-
parison with flight test pitch angle. (Note: 
Due to the criticality of angle of attack in 
the development of the ground effects model, 
particularly critical for normal landings and 
landings involving cross-control input appli-
cable to Level B simulators, stable ‘‘fly-by’’ 
trim data will be the acceptable norm for 
normal and cross-control input landing ob-
jective data for these applications.) 

(2) The use of a rigorously defined and fully 

mature simulation controls system model 
that includes accurate gearing and cable 
stretch characteristics (where applicable), 
determined from actual aircraft measure-
ments. Such a model does not require con-
trol surface position measurements in the 
flight test objective data in these limited ap-
plications. 

f. The sponsor is urged to contact the 

NSPM for clarification of any issue regard-
ing airplanes with reversible control sys-
tems. Table A2E is not applicable to Com-
puter Controlled Aircraft FFSs. 

g. Utilization of these alternate data 

sources, procedures, and instrumentation 
(Table A2E) does not relieve the sponsor 
from compliance with the balance of the in-
formation contained in this document rel-
ative to Level A or Level B FFSs. 

h. The term ‘‘inertial measurement sys-

tem’’ is used in the following table to include 
the use of a functional global positioning 
system (GPS). 

i. Synchronized video for the use of alter-

native data sources, procedures, and instru-
mentation should have: 

(1) Sufficient resolution to allow mag-

nification of the display to make appropriate 
measurement and comparisons; and 

(2) Sufficient size and incremental mark-

ing to allow similar measurement and com-
parison. The detail provided by the video 
should provide sufficient clarity and accu-
racy to measure the necessary parameter(s) 
to at least 

1

⁄

2

of the tolerance authorized for 

the specific test being conducted and allow 

VerDate Sep<11>2014 

16:30 Jun 25, 2019

Jkt 247047

PO 00000

Frm 00132

Fmt 8010

Sfmt 8002

Q:\14\14V2.TXT

PC31

kpayne on VMOFRWIN702 with $$_JOB