Rev 0 (9/08)

Comments in Response to 

“Final rule; request for comments”

Docket: FAA-2011-0917- Directorate Identifier 2011-NM-157-AD

Comments have been received in response to: “Final rule; request for comments,”

Airworthiness Directive (AD) Docket and Directorate Identifier entered above. 

(Project engineer: Please review any comments to determine if additional action is warranted.

Once you have made your determination, please fill in the commenter(s) name(s) and check the 

appropriate response below. Include additional information following the appropriate response, 

if necessary. Then include your name and the date in the spaces provided, and return it to the 

AD directorate focal.

The FAA has reviewed comment(s) related to the above FAA Docket that we received from: 

AIRBUS:

Docket No. FAA-2011-0917; Directorate Identifier 2011-NM-157-AD Please see below our 

comment on the published FAA AD 2011-19-01: AIRBUS operational procedures request the 

flight crew to turn off GEN and not the IDG. AIRBUS requests FAA to reconsider the phrases of 

the AD text for better clarity and understanding of operators. For example, in the paragraph (h) 

and (k) of the AD the phrase “If a GEN is selected OFF by the flightcrew in accordance with the 

TR...” could be used instead of the current phrase “If an IDG is shut down by the flight crew in 

accordance with the TR...”. 

USA3000:

USA3000 sent an electronic mail on September 30, 2011, asking for clarification on the intent of 

words "IDG" in AD paragraphs (h) and (k). USA3000 asked if the words "IDG" and "GEN" used 

interchangeably or synonymously.

VIETNAM AIRLINES:

Can you help to clarify the term “IDG is shut down automatically” as stated in AD 2011-19-01. 

and in what circumstance of IDG, ENG Generator of A320-214, A321-231 can be consider as 

this term. - Due to in Airbus A320-214, A321-231 only describle the IDG as manual 

disconnection. Thank you in advance for your assistance.

Onur Air:

Is their a terminating action for this AD. What are the instruction for inspection of the IDG 

harness and connector. 

(Please check one)

 These comments have not been found to contain any information to warrant reconsideration 

or change of this AD.
 These comments have been found to contain information that warrants consideration of 

additional regulatory action. (SEE Airworthiness Directives Manual 

FAA-IR-M-8040.1 FOR ADDITIONAL ACTION.)

______The FAA intent for the Integrated Drive Generator (IDG) is synonymous with Generator 

(GEN). The AD paragraph (h) has been carried over from the previous AD 2004-15-14 and the 

paragraph (k) was based on the intent that the operators understand that the intent of IDG shut 

down is to shut down GEN as required by the AFM. The FAA AD will be revised to clarify this 

intent.

The FAA AD 2011-19-01 did not carried the terminating action from AD 2004-15-14 due to 

reasons stated in EASA AD 2011-0142. The FAA issued an Alternate Means of Compliance 

(AMOC) for the US operators that provides instructions for inspection, repair and replacement of 

IDG harness and connector. Non US registered operators are advised to contact their civil 

aviation authority for further disposition. 

Sanjay Ralhan_____ 11/03/11__

Name: Date:

(This form is part of the official docket file for this AD action.)