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14 CFR Ch. I (1–1–18 Edition) 

Pt. 135, App. G 

(ii) The maintenance action on each af-

fected ETOPS Significant System is per-
formed by the same technician under the di-
rect supervision of a second qualified indi-
vidual; and 

(iii) For either paragraph G135.2.8(c)(2)(i) 

or (ii) of this appendix, a qualified individual 
conducts a ground verification test and any 
in-flight verification test required under the 
program developed pursuant to paragraph 
G135.2.8(d) of this appendix. 

(d)  Verification program. The certificate 

holder must develop a program for the reso-
lution of discrepancies that will ensure the 
effectiveness of maintenance actions taken 
on ETOPS Significant Systems. The 
verification program must identify potential 
problems and verify satisfactory corrective 
action. The verification program must in-
clude ground verification and in-flight 
verification policy and procedures. The cer-
tificate holder must establish procedures to 
clearly indicate who is going to initiate the 
verification action and what action is nec-
essary. The verification action may be per-
formed on an ETOPS revenue flight provided 
the verification action is documented as sat-
isfactorily completed upon reaching the 
ETOPS entry point. 

(e) Task identification. The certificate hold-

er must identify all ETOPS-specific tasks. 
An ETOPS qualified person must accomplish 
and certify by signature that the ETOPS- 
specific task has been completed. 

(f)  Centralized maintenance control proce-

dures.  The certificate holder must develop 
procedures for centralized maintenance con-
trol for ETOPS. 

(g)  ETOPS parts control program. The cer-

tificate holder must develop an ETOPS parts 
control program to ensure the proper identi-
fication of parts used to maintain the con-
figuration of airplanes used in ETOPS. 

(h)  Enhanced Continuing Analysis and Sur-

veillance System (E–CASS) program. A certifi-
cate holder’s existing CASS must be en-
hanced to include all elements of the ETOPS 
maintenance program. In addition to the re-
porting requirements of § 135.415 and § 135.417, 
the program includes reporting procedures, 
in the form specified in § 135.415(e), for the 
following significant events detrimental to 
ETOPS within 96 hours of the occurrence to 
the certificate holding district office 

(1) IFSDs, except planned IFSDs performed 

for flight training. 

(2) Diversions and turnbacks for failures, 

malfunctions, or defects associated with any 
airplane or engine system. 

(3) Uncommanded power or thrust changes 

or surges. 

(4) Inability to control the engine or obtain 

desired power or thrust. 

(5) Inadvertent fuel loss or unavailability, 

or uncorrectable fuel imbalance in flight. 

(6) Failures, malfunctions or defects asso-

ciated with ETOPS Significant Systems. 

(7) Any event that would jeopardize the 

safe flight and landing of the airplane on an 
ETOPS flight. 

(i) Propulsion system monitoring. The certifi-

cate holder, in coordination with the CHDO, 

(1) Establish criteria as to what action is 

to be taken when adverse trends in propul-
sion system conditions are detected, and 

(2) Investigate common cause effects or 

systemic errors and submit the findings to 
the CHDO within 30 days. 

(j)  Engine condition monitoring. (1) The cer-

tificate holder must establish an engine-con-
dition monitoring program to detect deterio-
ration at an early stage and to allow for cor-
rective action before safe operation is af-

(2) This program must describe the param-

eters to be monitored, the method of data 
collection, the method of analyzing data, and 
the process for taking corrective action. 

(3) The program must ensure that engine 

limit margins are maintained so that a pro-
longed engine-inoperative diversion may be 
conducted at approved power levels and in 
all expected environmental conditions with-
out exceeding approved engine limits. This 
includes approved limits for items such as 
rotor speeds and exhaust gas temperatures. 

(k)  Oil consumption monitoring. The certifi-

cate holder must develop an engine oil con-
sumption monitoring program to ensure that 
there is enough oil to complete each ETOPS 
flight. APU oil consumption must be in-
cluded if an APU is required for ETOPS. The 
operator’s consumption limit may not ex-
ceed the manufacturer’s recommendation. 
Monitoring must be continuous and include 
oil added at each ETOPS departure point. 
The program must compare the amount of 
oil added at each ETOPS departure point 
with the running average consumption to 
identify sudden increases. 

(l) APU in-flight start program. If an APU is 

required for ETOPS, but is not required to 
run during the ETOPS portion of the flight, 
the certificate holder must have a program 
acceptable to the FAA for cold soak in-flight 
start and run reliability. 

(m)  Maintenance training. For each air-

plane-engine combination, the certificate 
holder must develop a maintenance training 
program to ensure that it provides training 
adequate to support ETOPS. It must include 
ETOPS specific training for all persons in-
volved in ETOPS maintenance that focuses 
on the special nature of ETOPS. This train-
ing must be in addition to the operator’s 
maintenance training program used to qual-
ify individuals for specific airplanes and en-

(n)  Configuration, maintenance, and proce-

dures (CMP) document. The certificate holder 
must use a system to ensure compliance 

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