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14 CFR Ch. I (1–1–19 Edition) 

§ 121.374 

under the direct supervision of a sec-
ond qualified individual; and 

(iii) For either paragraph (c)(2)(i) or 

(ii) of this section, a qualified indi-
vidual conducts a ground verification 
test and any in-flight verification test 
required under the program developed 
pursuant to paragraph (d) of this sec-
tion. 

(d) 

Verification program. 

The certifi-

cate holder must develop and maintain 
a program for the resolution of discrep-
ancies that will ensure the effective-
ness of maintenance actions taken on 
ETOPS Significant Systems. The 
verification program must identify po-
tential problems and verify satisfac-
tory corrective action. The verification 
program must include ground 
verification and in-flight verification 
policy and procedures. The certificate 
holder must establish procedures to in-
dicate clearly who is going to initiate 
the verification action and what action 
is necessary. The verification action 
may be performed on an ETOPS rev-
enue flight provided the verification 
action is documented as satisfactorily 
completed upon reaching the ETOPS 
Entry Point. 

(e) 

Task identification. 

The certificate 

holder must identify all ETOPS-spe-
cific tasks. An appropriately trained 
mechanic who is ETOPS qualified must 
accomplish and certify by signature 
that the ETOPS-specific task has been 
completed. 

(f) 

Centralized maintenance control pro-

cedures. 

The certificate holder must de-

velop and maintain procedures for cen-
tralized maintenance control for 
ETOPS. 

(g) 

Parts control program. 

The certifi-

cate holder must develop an ETOPS 
parts control program to ensure the 
proper identification of parts used to 
maintain the configuration of airplanes 
used in ETOPS. 

(h) 

Reliability program. 

The certificate 

holder must have an ETOPS reliability 
program. This program must be the 
certificate holder’s existing reliability 
program or its Continuing Analysis 
and Surveillance System (CASS) sup-
plemented for ETOPS. This program 
must be event-oriented and include 
procedures to report the events listed 
below, as follows: 

(1) The certificate holder must report 

the following events within 96 hours of 
the occurrence to its responsible Flight 
Standards office: 

(i) IFSDs, except planned IFSDs per-

formed for flight training. 

(ii) Diversions and turnbacks for fail-

ures, malfunctions, or defects associ-
ated with any airplane or engine sys-
tem. 

(iii) Uncommanded power or thrust 

changes or surges. 

(iv) Inability to control the engine or 

obtain desired power or thrust. 

(v) Inadvertent fuel loss or unavail-

ability, or uncorrectable fuel imbal-
ance in flight. 

(vi) Failures, malfunctions or defects 

associated with ETOPS Significant 
Systems. 

(vii) Any event that would jeopardize 

the safe flight and landing of the air-
plane on an ETOPS flight. 

(2) The certificate holder must inves-

tigate the cause of each event listed in 
paragraph (h)(1) of this section and 
submit findings and a description of 
corrective action to its responsible 
Flight Standards office. The report 
must include the information specified 
in § 121.703(e). The corrective action 
must be acceptable to its responsible 
Flight Standards office. 

(i) 

Propulsion system monitoring. 

(1) If 

the IFSD rate (computed on a 12-month 
rolling average) for an engine installed 
as part of an airplane-engine combina-
tion exceeds the following values, the 
certificate holder must do a com-
prehensive review of its operations to 
identify any common cause effects and 
systemic errors. The IFSD rate must 
be computed using all engines of that 
type in the certificate holder’s entire 
fleet of airplanes approved for ETOPS. 

(i) A rate of 0.05 per 1,000 engine 

hours for ETOPS up to and including 
120 minutes. 

(ii) A rate of 0.03 per 1,000 engine 

hours for ETOPS beyond 120-minutes 
up to and including 207 minutes in the 
North Pacific Area of Operation and up 
to and including 180 minutes elsewhere. 

(iii) A rate of 0.02 per 1,000 engine 

hours for ETOPS beyond 207 minutes in 
the North Pacific Area of Operation 
and beyond 180 minutes elsewhere. 

(2) Within 30 days of exceeding the 

rates above, the certificate holder must 

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