Code of Federal Regulations - Title 14

999

Federal Aviation Administration, DOT

Pt. 43, App. E

(f) Each person performing an annual or

100-hour inspection shall inspect (where ap-
plicable) all components of the wing and cen-
ter section assembly for poor general condi-
tion, fabric or skin deterioration, distortion,
evidence of failure, and insecurity of attach-
ment.

(g) Each person performing an annual or

100-hour inspection shall inspect (where ap-
plicable) all components and systems that
make up the complete empennage assembly
for poor general condition, fabric or skin de-
terioration, distortion, evidence of failure,
insecure attachment, improper component
installation, and improper component oper-
ation.

(h) Each person performing an annual or

100-hour inspection shall inspect (where ap-
plicable) the following components of the
propeller group:

(1) Propeller assembly—for cracks, nicks,

binds, and oil leakage.

(2) Bolts—for improper torquing and lack

of safetying.

(3) Anti-icing devices—for improper oper-

ations and obvious defects.

(4) Control mechanisms—for improper op-

eration, insecure mounting, and restricted
travel.

(i) Each person performing an annual or

100-hour inspection shall inspect (where ap-
plicable) the following components of the
radio group:

(1) Radio and electronic equipment—for

improper installation and insecure mount-
ing.

(2) Wiring and conduits—for improper rout-

ing, insecure mounting, and obvious defects.

(3) Bonding and shielding—for improper in-

stallation and poor condition.

(4) Antenna including trailing antenna—for

poor condition, insecure mounting, and im-
proper operation.

(j) Each person performing an annual or

100-hour inspection shall inspect (where ap-
plicable) each installed miscellaneous item
that is not otherwise covered by this listing
for improper installation and improper oper-
ation.

PPENDIX

ART

43—A

LTIMETER

YSTEM

EST AND

NSPECTION

Each person performing the altimeter sys-

tem tests and inspections required by § 91.411
shall comply with the following:

(a) Static pressure system:
(1) Ensure freedom from entrapped mois-

ture and restrictions.

(2) Determine that leakage is within the

tolerances established in § 23.1325 or § 25.1325,
whichever is applicable.

(3) Determine that the static port heater,

if installed, is operative.

(4) Ensure that no alterations or deforma-

tions of the airframe surface have been made
that would affect the relationship between

air pressure in the static pressure system
and true ambient static air pressure for any
flight condition.

(b) Altimeter:
(1) Test by an appropriately rated repair

facility in accordance with the following
subparagraphs. Unless otherwise specified,
each test for performance may be conducted
with the instrument subjected to vibration.
When tests are conducted with the tempera-
ture substantially different from ambient
temperature of approximately 25 degrees C.,
allowance shall be made for the variation
from the specified condition.

(i)

Scale error. With the barometric pres-

sure scale at 29.92 inches of mercury, the al-
timeter shall be subjected successively to
pressures corresponding to the altitude spec-
ified in Table I up to the maximum normally
expected operating altitude of the airplane
in which the altimeter is to be installed. The
reduction in pressure shall be made at a rate
not in excess of 20,000 feet per minute to
within approximately 2,000 feet of the test
point. The test point shall be approached at
a rate compatible with the test equipment.
The altimeter shall be kept at the pressure
corresponding to each test point for at least
1 minute, but not more than 10 minutes, be-
fore a reading is taken. The error at all test
points must not exceed the tolerances speci-
fied in Table I.

(ii)

Hysteresis. The hysteresis test shall

begin not more than 15 minutes after the al-
timeter’s initial exposure to the pressure
corresponding to the upper limit of the scale
error test prescribed in subparagraph (i); and
while the altimeter is at this pressure, the
hysteresis test shall commence. Pressure
shall be increased at a rate simulating a de-
scent in altitude at the rate of 5,000 to 20,000
feet per minute until within 3,000 feet of the
first test point (50 percent of maximum alti-
tude). The test point shall then be ap-
proached at a rate of approximately 3,000
feet per minute. The altimeter shall be kept
at this pressure for at least 5 minutes, but
not more than 15 minutes, before the test
reading is taken. After the reading has been
taken, the pressure shall be increased fur-
ther, in the same manner as before, until the
pressure corresponding to the second test
point (40 percent of maximum altitude) is
reached. The altimeter shall be kept at this
pressure for at least 1 minute, but not more
than 10 minutes, before the test reading is
taken. After the reading has been taken, the
pressure shall be increased further, in the
same manner as before, until atmospheric
pressure is reached. The reading of the al-
timeter at either of the two test points shall
not differ by more than the tolerance speci-
fied in Table II from the reading of the al-
timeter for the corresponding altitude re-
corded during the scale error test prescribed
in paragraph (b)(i).

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