title-14-part-135-sec135-156

453

Federal Aviation Administration, DOT

§ 135.156

(TSO)–C151. The airplane must also in-
clude an approved terrain situational
awareness display.

(2) No person may operate a turbine-

powered airplane configured with 6 to 9
passenger seats, excluding any pilot
seat, unless that airplane is equipped
with an approved terrain awareness
and warning system that meets as a
minimum the requirements for Class B
equipment in Technical Standard Order
(TSO)–C151.

(b)

Airplanes manufactured on or before

March 29, 2002:

(1) No person may operate a turbine-

powered airplane configured with 10 or
more passenger seats, excluding any
pilot seat, after March 29, 2005, unless
that airplane is equipped with an ap-
proved terrain awareness and warning
system that meets the requirements
for Class A equipment in Technical
Standard Order (TSO)–C151. The air-
plane must also include an approved
terrain situational awareness display.

(2) No person may operate a turbine-

powered airplane configured with 6 to 9
passenger seats, excluding any pilot
seat, after March 29, 2005, unless that
airplane is equipped with an approved
terrain awareness and warning system
that meets as a minimum the require-
ments for Class B equipment in Tech-
nical Standard Order (TSO)–C151.

(Approved by the Office of Management and
Budget under control number 2120–0631)

(c)

Airplane Flight Manual.

The Air-

plane Flight Manual shall contain ap-
propriate procedures for—

(1) The use of the terrain awareness

and warning system; and

(2) Proper flight crew reaction in re-

sponse to the terrain awareness and
warning system audio and visual warn-
ings.

[Doc. No. 29312, 65 FR 16755, Mar. 29, 2000]

§ 135.155 Fire extinguishers: Pas-

senger-carrying aircraft.

No person may operate an aircraft

carrying passengers unless it is
equipped with hand fire extinguishers
of an approved type for use in crew and
passenger compartments as follows—

(a) The type and quantity of extin-

guishing agent must be suitable for the
kinds of fires likely to occur;

(b) At least one hand fire extin-

guisher must be provided and conven-
iently located on the flight deck for
use by the flight crew; and

guisher must be conveniently located
in the passenger compartment of each
aircraft having a passenger seating
configuration, excluding any pilot seat,
of at least 10 seats but less than 31
seats.

§ 135.156 Flight data recorders: fil-

tered data.

(a) A flight data signal is filtered

when an original sensor signal has been
changed in any way, other than
changes necessary to:

(1) Accomplish analog to digital con-

version of the signal;

(2) Format a digital signal to be

DFDR compatible; or

(3) Eliminate a high frequency com-

ponent of a signal that is outside the
operational bandwidth of the sensor.

(b) An original sensor signal for any

flight recorder parameter required to
be recorded under § 135.152 may be fil-
tered only if the recorded signal value
continues to meet the requirements of
Appendix D or F of this part, as appli-
cable.

§ 135.152(h)(12) through (17), (42), or (88),
or the corresponding parameter in Ap-
pendix D of this part, if the recorded
signal value is filtered and does not
meet the requirements of Appendix D
or F of this part, as applicable, the cer-
tificate holder must:

(1) Remove the filtering and ensure

that the recorded signal value meets
the requirements of Appendix D or F of
this part, as applicable; or

(2) Demonstrate by test and analysis

that the original sensor signal value
can be reconstructed from the recorded
data. This demonstration requires
that:

(i) The FAA determine that the pro-

cedure and test results submitted by
the certificate holder as its compliance
with paragraph (c)(2) of this section are
repeatable; and

(ii) The certificate holder maintains

documentation of the procedure re-
quired to reconstruct the original sen-
sor signal value. This documentation is

454

14 CFR Ch. I (1–1–24 Edition)

§ 135.157

also subject to the requirements of
§ 135.152(e).

(d)

Compliance.

Compliance is re-

quired as follows:

(1) No later than October 20, 2011,

each operator must determine, for each
aircraft on its operations specifica-
tions, whether the aircraft’s DFDR sys-
tem is filtering any of the parameters
listed in paragraph (c) of this section.
The operator must create a record of
this determination for each aircraft it
operates, and maintain it as part of the
correlation documentation required by
§ 135.152 (f)(1)(iii) or (f)(2)(iii) of this
part as applicable.

(2) For aircraft that are not filtering

any listed parameter, no further action
is required unless the aircraft’s DFDR
system is modified in a manner that
would cause it to meet the definition of
filtering on any listed parameter.

(3) For aircraft found to be filtering a

parameter listed in paragraph (c) of
this section the operator must either:

(i) No later than April 21, 2014, re-

move the filtering; or

(ii) No later than April 22, 2013, sub-

mit the necessary procedure and test
results required by paragraph (c)(2) of
this section.

(4) After April 21, 2014, no aircraft

flight data recording system may filter
any parameter listed in paragraph (c)
of this section that does not meet the
requirements of Appendix D or F of
this part, unless the certificate holder
possesses test and analysis procedures
and the test results that have been ap-
proved by the FAA. All records of
tests, analysis and procedures used to
comply with this section must be
maintained as part of the correlation
documentation required by § 135.152
(f)(1)(iii) or (f)(2)(iii) of this part as ap-
plicable.

[Doc. No. FAA–2006–26135, 75 FR 7357, Feb. 19,
2010]

§ 135.157 Oxygen equipment require-

ments.

(a)

Unpressurized aircraft.

No person

may operate an unpressurized aircraft
at altitudes prescribed in this section
unless it is equipped with enough oxy-
gen dispensers and oxygen to supply
the pilots under § 135.89(a) and to sup-
ply, when flying—

(1) At altitudes above 10,000 feet

through 15,000 feet MSL, oxygen to at
least 10 percent of the occupants of the
aircraft, other than the pilots, for that
part of the flight at those altitudes
that is of more than 30 minutes dura-
tion; and

(2) Above 15,000 feet MSL, oxygen to

each occupant of the aircraft other
than the pilots.

(b)

Pressurized aircraft.

No person may

operate a pressurized aircraft—

(1) At altitudes above 25,000 feet

MSL, unless at least a 10-minute sup-
ply of supplemental oxygen is available
for each occupant of the aircraft, other
than the pilots, for use when a descent
is necessary due to loss of cabin pres-
surization; and

(2) Unless it is equipped with enough

oxygen dispensers and oxygen to com-
ply with paragraph (a) of this section
whenever the cabin pressure altitude
exceeds 10,000 feet MSL and, if the
cabin pressurization fails, to comply
with § 135.89 (a) or to provide a 2-hour
supply for each pilot, whichever is
greater, and to supply when flying—

(i) At altitudes above 10,000 feet

(ii) Above 15,000 feet MSL, oxygen to

each occupant of the aircraft, other
than the pilots, for one hour unless, at
all times during flight above that alti-
tude, the aircraft can safely descend to
15,000 feet MSL within four minutes, in
which case only a 30-minute supply is
required.

section must have a means—

(1) To enable the pilots to readily de-

termine, in flight, the amount of oxy-
gen available in each source of supply
and whether the oxygen is being deliv-
ered to the dispensing units; or

(2) In the case of individual dis-

pensing units, to enable each user to
make those determinations with re-
spect to that person’s oxygen supply
and delivery; and

(3) To allow the pilots to use undi-

luted oxygen at their discretion at alti-
tudes above 25,000 feet MSL.