Airworthiness Directive · Amendment 39-17547 · Landing gear
Airbus Airplanes
Superseded. A later AD replaced this one: AD 2016-05-02. Comply with the one in force.
This AD applies to the Airbus airplanes, certificated in any category, identified in paragraphs (c)(1), (c)(2), (c)(3), and (c)(4) of this AD, all manufacturer serial numbers.
(1) Model A318-111, -112, -121, and -122 airplanes.
(2) Model A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes.
(3) Model A320-111, -211, -212, -214, -231, -232, and -233 airplanes.
(4) Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes.
We are adopting a new airworthiness directive (AD) for all Airbus Model A318, A319, A320, and A321 series airplanes. This AD requires an inspection to determine airplane configuration and part numbers of the landing gear control interface unit and main landing gear (MLG) door actuators; and, for affected airplanes, repetitive inspections of the opening sequence of the MLG door actuator, and replacement of the MLG door actuator if necessary. This AD also provides optional terminating action for the repetitive inspections. This AD was prompted by a report of a MLG failing to extend during landing, and a determination that a certain configuration of landing gear control interface unit and actuators may result in masking of centralized fault display system messages that are necessary to mitigate risks associated with failure of MLG extension or down-locking. We are issuing this AD to detect and correct such a configuration, which could prevent the full extension or down-locking of the MLG, possibly resulting in MLG collapse during landing and consequent damage to the airplane and injury to occupants.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
At the later of the compliance times specified in paragraphs (g)(1) and (g)(2) of this AD: Do an inspection to determine the configuration (modification status) of the airplane and identify the part number of the left-hand (LH) and right-hand (RH) LGCIU and MLG door actuators. A review of the airplane delivery or maintenance records is acceptable for compliance with the requirements of this paragraph provided the airplane configuration and installed components can be conclusively determined from that review.
(1) Prior to the accumulation of 800 total flight cycles since first flight of the airplane.
(2) Within 14 days after the effective date of this AD.
If, during the determination and identification required by paragraph (g) of this AD, the configuration of the airplane is determined to be Airbus post-modification 39303 or post-Airbus Service Bulletin A320-32-1409 (Interlink Communication ARINC 429 installed), and both an LGCIU and a MLG door actuator are installed with a part number listed in table 1 to paragraph (h) of this AD: Except as provided by paragraph (k) of this AD, at the later of the compliance times specified in paragraphs (g)(1) and (g)(2) of this AD, and thereafter at intervals not to exceed 8 days or 5 flight cycles, whichever occurs later, do an inspection of the door opening sequence of the LH and RH MLG doors, in accordance with the instructions of Airbus Alert Operators Transmission (AOT) A32N001-13, dated June 24, 2013.
| Component name | Part No. |
|---|---|
| LGCIU (LH and RH) | 80-178-02-88012 |
| LGCIU (LH and RH) | 80-178-03-88013 |
| MLG door actuator | 114122006 |
| MLG door actuator | 114122007 |
| MLG door actuator | 114122009 |
| MLG door actuator | 114122010 |
| MLG door actuator | 114122011 |
| MLG door actuator | 114122012 |
If a slow door operation or restricted extension is found during any inspection required by paragraph (h) of this AD: Before further flight, replace the affected MLG door actuator with a new or serviceable actuator, in accordance with the instructions of Airbus AOT A32N001-13, dated June 24, 2013.
Replacement of a MLG door actuator, as required by paragraph (i) of this AD, does not constitute terminating action for the repetitive inspections required by paragraph (h) of this AD, unless MLG door actuators having P/N 114122014 are installed on both LH and RH sides, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-32-1407, dated May 14, 2013.
Airplanes on which the LGCIU interlink is disconnected (Airbus modification 155522 applied in production, or modified in-service in accordance with the instructions of Airbus AOT A32N001-13, dated June 24, 2013), or on which MLG door actuators having P/N 114122014 are installed on both LH and RH sides (Airbus modification 153655 applied in production, or modified in-service in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-32-1407, dated May 14, 2013), are not required to do the actions required by paragraph (h) of this AD, provided that the airplane is not modified to a configuration as defined in paragraph (h) of this AD.
Doing an inspection of the door opening sequence of the LH and RH doors of the MLG of an airplane, as required by paragraph (h) of this AD, is an acceptable alternative method to comply with the requirements of paragraphs (j) and (l) of AD 2011-13-11, Amendment 39-16734 (76 FR 37241, June 27, 2011), for that airplane.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
