137 

Federal Aviation Administration, DOT 

§ 21.5 

of the reportable occurrences listed in 
this paragraph. 

(b) 

Reliability of two-engine airplanes

— 

(1) 

Reporting of two-engine airplane in- 

service reliability. 

The holder of a type 

certificate for an airplane approved for 
ETOPS and the holder of a type certifi-
cate for an engine installed on an air-
plane approved for ETOPS must report 
monthly to their respective Aircraft 
Certification Service office on the reli-
ability of the world fleet of those air-
planes and engines. The report pro-
vided by both the airplane and engine 
type certificate holders must address 
each airplane-engine combination ap-
proved for ETOPS. The FAA may ap-
prove quarterly reporting if the air-
plane-engine combination dem-
onstrates an IFSD rate at or below 
those specified in paragraph (b)(2) of 
this section for a period acceptable to 
the FAA. This reporting may be com-
bined with the reporting required by 
§ 21.3. The responsible type certificate 
holder must investigate any cause of 
an IFSD resulting from an occurrence 
attributable to the design of its prod-
uct and report the results of that in-
vestigation to its responsible Aircraft 
Certification Service office. Reporting 
must include: 

(i) Engine IFSDs, except planned 

IFSDs performed for flight training. 

(ii) The world fleet 12-month rolling 

average IFSD rates for all causes, ex-
cept planned IFSDs performed for 
flight training. 

(iii) ETOPS fleet utilization, includ-

ing a list of operators, their ETOPS di-
version time authority, flight hours, 
and cycles. 

(2) 

World fleet IFSD rate for two-engine 

airplanes. 

The holder of a type certifi-

cate for an airplane approved for 
ETOPS and the holder of a type certifi-
cate for an engine installed on an air-
plane approved for ETOPS must issue 
service information to the operators of 
those airplanes and engines, as appro-
priate, to maintain the world fleet 12- 
month rolling average IFSD rate at or 
below the following levels: 

(i) A rate of 0.05 per 1,000 world-fleet 

engine-hours for an airplane-engine 
combination approved for up to and in-
cluding 120-minute ETOPS. When all 
ETOPS operators have complied with 
the corrective actions required in the 

configuration, maintenance and proce-
dures (CMP) document as a condition 
for ETOPS approval, the rate to be 
maintained is at or below 0.02 per 1,000 
world-fleet engine-hours. 

(ii) A rate of 0.02 per 1,000 world-fleet 

engine-hours for an airplane-engine 
combination approved for up to and in-
cluding 180-minute ETOPS, including 
airplane-engine combinations approved 
for 207-minute ETOPS in the North Pa-
cific operating area under appendix P, 
section I, paragraph (h), of part 121 of 
this chapter. 

(iii) A rate of 0.01 per 1,000 world-fleet 

engine-hours for an airplane-engine 
combination approved for ETOPS be-
yond 180 minutes, excluding airplane- 
engine combinations approved for 207- 
minute ETOPS in the North Pacific op-
erating area under appendix P, section 
I, paragraph (h), of part 121 of this 
chapter. 

[Doc. No. FAA–2002–6717, 72 FR 1872, Jan. 16, 
2007, as amended by Doc. No. FAA–2018–0119, 
Amdt. 21–101, 83 FR 9169, Mar. 5, 2018] 

§ 21.5

Airplane or Rotorcraft Flight 

Manual. 

(a) With each airplane or rotorcraft 

not type certificated with an Airplane 
or Rotorcraft Flight Manual and hav-
ing no flight time before March 1, 1979, 
the holder of a type certificate (includ-
ing amended or supplemental type cer-
tificates) or the licensee of a type cer-
tificate must make available to the 
owner at the time of delivery of the 
aircraft a current approved Airplane or 
Rotorcraft Flight Manual. 

(b) The Airplane or Rotorcraft Flight 

Manual required by paragraph (a) of 
this section must contain the following 
information: 

(1) The operating limitations and in-

formation required to be furnished in 
an Airplane or Rotorcraft Flight Man-
ual or in manual material, markings, 
and placards, by the applicable regula-
tions under which the airplane or 
rotorcraft was type certificated. 

(2) The maximum ambient atmos-

pheric temperature for which engine 
cooling was demonstrated must be 
stated in the performance information 
section of the Flight Manual, if the ap-
plicable regulations under which the 
aircraft was type certificated do not re-
quire ambient temperature on engine 

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