367 

Federal Aviation Administration, DOT 

Pt. 25, SFAR No. 109 

seats installed but that the number of pas-
sengers on the airplane must not exceed 60. 
Additionally, there must be a placard in-
stalled adjacent to each door that can be 
used as a passenger boarding door that states 
that the maximum passenger capacity is 60. 
The placard must be clearly legible to pas-
sengers entering the airplane. 

(b) For airplanes outfitted with interior 

doors under paragraph 10 of this SFAR, the 
airplane flight manual (AFM) must include 
an appropriate limitation that the airplane 
must be staffed with at least the following 
number of flight attendants who meet the re-
quirements of 14 CFR 91.533(b): 

(1) The number of flight attendants re-

quired by § 91.533(a)(1) and (2) of this chapter, 
and 

(2) At least one flight attendant if the air-

plane model was originally certified for 75 
passengers or more. 

(c) The AFM must include appropriate lim-

itation(s) to require a preflight passenger 
briefing describing the appropriate functions 
to be performed by the passengers and the 
relevant features of the airplane to ensure 
the safety of the passengers and crew. 

(d) The airplane may not be offered for 

common carriage or operated for hire. The 
operating limitations section of the AFM 
must be revised to prohibit any operations 
involving the carriage of persons or property 
for compensation or hire. The operators may 
receive remuneration to the extent con-
sistent with parts 125 and 91, subpart F, of 
this chapter. 

(e) A placard stating that ‘‘Operations in-

volving the carriage of persons or property 
for compensation or hire are prohibited,’’ 
must be located in the area of the Airworthi-
ness Certificate holder at the entrance to the 
flightdeck. 

(f) For passenger capacities of 45 to 60 pas-

sengers, analysis must be submitted that 
demonstrates that the airplane can be evacu-
ated in less than 90 seconds under the condi-
tions specified in § 25.803 and appendix J to 
part 25. 

(g) In order for any airplane certified under 

this SFAR to be placed in part 135 or part 121 
operations, the airplane must be brought 
back into full compliance with the applica-
ble operational part. 

Equipment and Design 

3. 

General.  Unless otherwise noted, compli-

ance is required with the applicable certifi-
cation basis for the airplane. Some provi-
sions of this SFAR impose alternative re-
quirements to certain airworthiness stand-
ards that do not apply to airplanes certifi-
cated to earlier standards. Those airplanes 
with an earlier certification basis are not re-
quired to comply with those alternative re-
quirements. 

4. 

Occupant Protection. 

(a) Firm Handhold. In lieu of the require-

ments of § 25.785(j), there must be means pro-
vided to enable persons to steady themselves 
in moderately rough air while occupying 
aisles that are along the cabin sidewall, or 
where practicable, bordered by seats (seat 
backs providing a 25-pound minimum break-
away force are an acceptable means of com-
pliance). 

(b) Injury criteria for multiple occupancy 

side-facing seats. The following require-
ments are only applicable to airplanes that 
are subject to § 25.562. 

(1) 

Existing Criteria. All injury protection 

criteria of § 25.562(c)(1) through (c)(6) apply to 
the occupants of side-facing seating. The 
Head Injury Criterion (HIC) assessments are 
only required for head contact with the seat 
and/or adjacent structures. 

(2) 

Body-to-Body Contact. Contact between 

the head, pelvis, torso or shoulder area of 
one Anthropomorphic Test Dummy (ATD) 
with the head, pelvis, torso or shoulder area 
of the ATD in the adjacent seat is not al-
lowed during the tests conducted in accord-
ance with § 25.562(b)(1) and (b)(2). Contact 
during rebound is allowed. 

(3) 

Thoracic Trauma. If the torso of an ATD 

at the forward-most seat place impacts the 
seat and/or adjacent structure during test-
ing, compliance with the Thoracic Trauma 
Index (TTI) injury criterion must be substan-
tiated by dynamic test or by rational anal-
ysis based on previous test(s) of a similar 
seat installation. TTI data must be acquired 
with a Side Impact Dummy (SID), as defined 
by 49 CFR part 572, subpart F, or an equiva-
lent ATD or a more appropriate ATD and 
must be processed as defined in Federal 
Motor Vehicle Safety Standards (FMVSS) 
part 571.214, section S6.13.5 (49 CFR 571.214). 
The TTI must be less than 85, as defined in 
49 CFR part 572, subpart F. Torso contact 
during rebound is acceptable and need not be 
measured. 

(4) 

Pelvis.  If the pelvis of an ATD at any 

seat place impacts seat and/or adjacent 
structure during testing, pelvic lateral accel-
eration injury criteria must be substantiated 
by dynamic test or by rational analysis 
based on previous test(s) of a similar seat in-
stallation. Pelvic lateral acceleration may 
not exceed 130g. Pelvic acceleration data 
must be processed as defined in FMVSS part 
571.214, section S6.13.5 (49 CFR 571.214). 

(5) 

Body-to-Wall/Furnishing Contact. If the 

seat is installed aft of a structure—such as 
an interior wall or furnishing that may con-
tact the pelvis, upper arm, chest, or head of 
an occupant seated next to the structure— 
the structure or a conservative representa-
tion of the structure and its stiffness must 
be included in the tests. It is recommended, 
but not required, that the contact surface of 
the actual structure be covered with at least 
two inches of energy absorbing protective 

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