781 

Federal Aviation Administration, DOT 

§ 91.611 

by April 7, 2012, have a cockpit voice 
recorder that also— 

(1) Meets the requirements of 

§ 23.1457(d)(6) or § 25.1457(d)(6) of this 
chapter, as applicable; and 

(2) If transport category, meets the 

requirements of § 25.1457(a)(3), (a)(4), 
and (a)(5) of this chapter. 

(i) All airplanes or rotorcraft re-

quired by this section to have a cockpit 
voice recorder and flight data recorder, 
that are manufactured on or after 
April 7, 2010, must have a cockpit voice 
recorder installed that also— 

(1) Is installed in accordance with the 

requirements of § 23.1457 (except for 
paragraphs (a)(6) and (d)(5)); § 25.1457 
(except for paragraphs (a)(6) and (d)(5)); 
§ 27.1457 (except for paragraphs (a)(6) 
and (d)(5)); or § 29.1457 (except for para-
graphs (a)(6) and (d)(5)) of this chapter, 
as applicable; and 

(2) Retains at least the last 2 hours of 

recorded information using a recorder 
that meets the standards of TSO–C123a, 
or later revision. 

(3) For all airplanes or rotorcraft 

manufactured on or after April 6, 2012, 
also meets the requirements of 
§ 23.1457(a)(6) and (d)(5); § 25.1457(a)(6) 
and (d)(5); § 27.1457(a)(6) and (d)(5); or 
§ 29.1457(a)(6) and (d)(5) of this chapter, 
as applicable. 

(j) All airplanes or rotorcraft re-

quired by this section to have a cockpit 
voice recorder and a flight data re-
corder, that install datalink commu-
nication equipment on or after April 6, 
2012, must record all datalink messages 
as required by the certification rule ap-
plicable to the aircraft. 

(k) An aircraft operated under this 

part under deviation authority from 
part 125 of this chapter must comply 
with all of the applicable flight data 
recorder requirements of part 125 appli-
cable to the aircraft, notwithstanding 
such deviation authority. 

[Doc. No. 18334, 54 FR 34318, Aug. 18, 1989, as 
amended by Amdt. 91–226, 56 FR 51621, Oct. 
11, 1991; Amdt. 91–228, 57 FR 19353, May 5, 
1992; Amdt. 91–300, 73 FR 12564, Mar. 7, 2008; 
Amdt. 91–304, 73 FR 73178, Dec. 2, 2008; Amdt. 
91–300, 74 FR 32800, July 9, 2009; Amdt. 91–313, 
75 FR 17045, Apr. 5, 2010] 

§ 91.611

Authorization for ferry flight 

with one engine inoperative. 

(a) 

General. 

The holder of an air car-

rier operating certificate or an oper-
ating certificate issued under part 125 
may conduct a ferry flight of a four-en-
gine airplane or a turbine-engine-pow-
ered airplane equipped with three en-
gines, with one engine inoperative, to a 
base for the purpose of repairing that 
engine subject to the following: 

(1) The airplane model has been test 

flown and found satisfactory for safe 
flight in accordance with paragraph (b) 
or (c) of this section, as appropriate. 
However, each operator who before No-
vember 19, 1966, has shown that a model 
of airplane with an engine inoperative 
is satisfactory for safe flight by a test 
flight conducted in accordance with 
performance data contained in the ap-
plicable Airplane Flight Manual under 
paragraph (a)(2) of this section need 
not repeat the test flight for that 
model. 

(2) The approved Airplane Flight 

Manual contains the following per-
formance data and the flight is con-
ducted in accordance with that data: 

(i) Maximum weight. 
(ii) Center of gravity limits. 
(iii) Configuration of the inoperative 

propeller (if applicable). 

(iv) Runway length for takeoff (in-

cluding temperature accountability). 

(v) Altitude range. 
(vi) Certificate limitations. 
(vii) Ranges of operational limits. 
(viii) Performance information. 
(ix) Operating procedures. 
(3) The operator has FAA approved 

procedures for the safe operation of the 
airplane, including specific require-
ments for— 

(i) Limiting the operating weight on 

any ferry flight to the minimum nec-
essary for the flight plus the necessary 
reserve fuel load; 

(ii) A limitation that takeoffs must 

be made from dry runways unless, 
based on a showing of actual operating 
takeoff techniques on wet runways 
with one engine inoperative, takeoffs 
with full controllability from wet run-
ways have been approved for the spe-
cific model aircraft and included in the 
Airplane Flight Manual: 

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