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374 

14 CFR Ch. I (1–1–24 Edition) 

§ 125.407 

(1) Identify in its operations manual 

the person having custody of the copies 
of documents retained in accordance 
with paragraph (d) of this section; and 

(2) Retain at its principal operations 

base either the original or a copy of the 
records required by this section for at 
least 30 days. 

§ 125.407 Maintenance log: Airplanes. 

(a) Each person who takes corrective 

action or defers action concerning a re-
ported or observed failure or malfunc-
tion of an airframe, aircraft engine, 
propeller, or appliance shall record the 
action taken in the airplane mainte-
nance log in accordance with part 43 of 
this chapter. 

(b) Each certificate holder shall es-

tablish a procedure for keeping copies 
of the airplane maintenance log re-
quired by this section in the airplane 
for access by appropriate personnel and 
shall include that procedure in the 
manual required by § 125.249. 

§ 125.409 Service difficulty reports. 

(a) Each certificate holder shall re-

port the occurrence or detection of 
each failure, malfunction, or defect, in 
a form and manner prescribed by the 
Administrator. 

(b) Each certificate holder shall sub-

mit each report required by this sec-
tion, covering each 24-hour period be-
ginning at 0900 local time of each day 
and ending at 0900 local time on the 
next day, to the FAA office in Okla-
homa City, Oklahoma. Each report of 
occurrences during a 24-hour period 
shall be submitted to the collection 
point within the next 96 hours. How-
ever, a report due on Saturday or Sun-
day may be submitted on the following 
Monday, and a report due on a holiday 
may be submitted on the next work 
day. 

[Doc. No. 19779, 45 FR 67235, Oct. 9, 1980, as 
amended by Amdt. 125–49, 70 FR 76979, Dec. 
29, 2005] 

§ 125.411 Airworthiness release or 

maintenance record entry. 

(a) No certificate holder may operate 

an airplane after maintenance, preven-
tive maintenance, or alteration is per-
formed on the airplane unless the per-
son performing that maintenance, pre-

ventive maintenance, or alteration pre-
pares or causes to be prepared— 

(1) An airworthiness release; or 
(2) An entry in the aircraft mainte-

nance records in accordance with the 
certificate holder’s manual. 

(b) The airworthiness release or 

maintenance record entry required by 
paragraph (a) of this section must— 

(1) Be prepared in accordance with 

the procedures set forth in the certifi-
cate holder’s manual; 

(2) Include a certification that— 
(i) The work was performed in ac-

cordance with the requirements of the 
certificate holder’s manual; 

(ii) All items required to be inspected 

were inspected by an authorized person 
who determined that the work was sat-
isfactorily completed; 

(iii) No known condition exists that 

would make the airplane unairworthy; 
and 

(iv) So far as the work performed is 

concerned, the airplane is in condition 
for safe operation; and 

(3) Be signed by a person authorized 

in part 43 of this chapter to perform 
maintenance, preventive maintenance, 
and alteration. 

(c) When an airworthiness release 

form is prepared, the certificate holder 
must give a copy to the pilot in com-
mand and keep a record of it for at 
least 60 days. 

(d) Instead of restating each of the 

conditions of the certification required 
by paragraph (b) of this section, the 
certificate holder may state in its 
manual that the signature of a person 
authorized in part 43 of this chapter 
constitutes that certification. 

Subpart M—Continued Airworthi-

ness and Safety Improve-
ments 

S

OURCE

: Amdt. 125–53, 72 FR 63412, Nov. 8, 

2007, unless otherwise noted. 

§ 125.501 Purpose and definition. 

(a) This subpart requires operators to 

support the continued airworthiness of 
each airplane. These requirements may 
include, but are not limited to, revising 
the inspection program, incorporating 
design changes, and incorporating revi-
sions to Instructions for Continued 
Airworthiness.