Airworthiness Directive · Amendment 39-18444 · Landing gear
Airbus Airplanes
This AD applies to the airplanes identified in paragraphs (c)(1) through (c)(3) of this AD, certificated in any category, all manufacturer serial numbers, except those on which Airbus Modification 26925 has been embodied in production.
(1) Airbus Model A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes.
(2) Airbus Model A320-211, -212, -214, -231, -232, and -233 airplanes.
(3) Airbus Model A321-111, -112, -131, -211, -212, -213, -231, and -232 airplanes.
We are adopting a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 series airplanes. This AD was prompted by investigations that revealed that the cover seal of the brake dual distribution valve (BDDV) was damaged and did not ensure efficient sealing. This AD requires modifying the BDDVs having certain part numbers; modifying the drain hose of the BDDV; checking for the presence of water, ice, and hydraulic fluid; re-identifying the BDDV; and doing related investigative and corrective actions if necessary. We are issuing this AD to prevent damage to the BDDV, which could lead to water ingestion in the BDDV and freezing of the BDDV in flight, possibly resulting in loss of braking system function after landing.
Within 24 months after the effective date of this AD, modify the BDDV having a part number listed in the column “Old Part Number” in table 1 to paragraph (g) of this AD; modify the drain hose of the affected BDDV; check for the presence of water, ice, and hydraulic fluid; and re-identify the BDDV to the corresponding part number, as applicable, as listed as “New Part Number” in table 1 to paragraph (g) of this AD; and do all applicable related investigative and corrective actions; in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-32-1415, dated September 2, 2014. Do all applicable related investigative and corrective actions before further flight.
| Old part number | New part number |
|---|---|
| A25434006-3 | A25434006-3000 |
| A25434005-101 | A25434005-1010 |
| A25434005-201 | A25434005-2010 |
| A25434005-301 | A25434005-3010 |
| A25434005-401 | A25434005-4010 |
| A25434006-101 | A25434006-1010 |
Note 1 to table 1 to paragraph (g) of this AD: The part number listed in table 1 to paragraph (g) of this AD can have an “A” or “B” suffix, which is an indication of the amendment level of the BDDV. This does not affect compliance with this AD.
As of the applicable time specified in paragraph (h)(1) or (h)(2) of this AD, no person may install a BDDV having a part number listed as “Old Part Number” in table 1 to paragraph (g) of this AD, on any airplane.
(1) For any airplane that, on the effective date of this AD, has a BDDV installed with a part number listed as “Old Part Number” in table 1 to paragraph (g) of this AD: After modification of the airplane, as required by paragraph (g) of this AD.
(2) For any airplane that, on the effective date of this AD, has a BDDV installed with a part number listed as “New Part Number” in table 1 to paragraph (g) of this AD, or has a BDDV installed with a part number not listed in table 1 to paragraph (g) of this AD: As of the effective date of this AD.
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.
