Airworthiness Directive · Amendment 39-17682 · Fuel
Airbus Airplanes
This AD applies to Airbus Model A318-111, A318-112, A318-121, A318-122, A319-111, A319-112, A319-113, A319-114, A319-115, A319-131, A319-132, A319-133, A320-111, A320-211, A320-212, A320-214, A320-231, A320-232, A320-233, A321-111, A321-112, A321-131, A321-211, A321-212, A321-213, A321-231, and A321-232 airplanes; certificated in any category; all manufacturer serial numbers.
We are superseding airworthiness directive (AD) 2006-06-14 for certain Airbus Model A318-100 and A319-100 series airplanes, A320-111 airplanes, A320-200 series airplanes, and A321-100 and A321-200 series airplanes. AD 2006-06-14 required operators to review the airplane's maintenance records to determine the part numbers of the magnetic fuel level indicators (MFLIs) of the wing fuel tanks, and perform related investigative and corrective actions if necessary. This new AD also requires an inspection (improved method) to determine the part numbers of the MFLIs, and, if necessary, replacement of the MFLI or repair. This AD was prompted by information that the related investigative actions of AD 2006-06-14 are not fully effective and that an affected MFLI could still be installed on airplanes on which the related investigative actions were accomplished. We are issuing this AD to prevent an ignition source in the wing fuel tank in the event of a lightning strike, which could result in a fire or explosion.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
This paragraph restates the requirements of paragraph (f) of AD 2006-06-14, Amendment 39-14523 (71 FR 15023, March 27, 2006). For Model A318-111 and -112 airplanes; Model A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes; A320-111 airplanes; Model A320-211, -212, -214, -231, -232, and -233 airplanes; Model A321-111, -112, and -131 airplanes; and Model A321-211, -212, -213, -231, and -232 airplanes; on which Airbus Modification 27496 has not been installed in production: Within 65 months or 6,500 flight hours after May 1, 2006 (the effective date of AD 2006-06-14), whichever is first, review the airplane's maintenance records to determine the part number (P/N) of each MFLI of the wing fuel tanks in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-28-1138, dated March 18, 2005. If the P/N cannot be identified, or the P/N is identified in the “old P/N” column of the table in paragraph 1.L., “Interchangeability/Mixability,” of Airbus Service Bulletin A320-28-1138, dated March 18, 2005, before further flight, do the applicable related investigative and corrective actions by accomplishing all of the actions in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-28-1138, dated March 18, 2005.
This paragraph restates the requirements paragraph (g) of AD 2006-06-14, Amendment 39-14523 (71 FR 15023, March 27, 2006). For Model A318-111 and -112 airplanes; Model A319-111, -112, -113, -114, -115, -131, -132, and -133 airplanes; A320-111 airplanes; Model A320-211, -212, -214, -231, -232, and -233 airplanes; Model A321-111, -112, and -131 airplanes; and Model A321-211, -212, -213, -231, and -232 airplanes; on which Airbus Modification 27496 has not been installed in production: As of May 1, 2006 (the effective date of AD 2006-06-14), no person may install on any airplane any MFLI of the wing fuel tanks with a P/N identified in the “old P/N” column of the table in paragraph 1.L., “Interchangeability/Mixability,” of Airbus Service Bulletin A320-28-1138, dated March 18, 2005.
For all airplanes, except as provided by paragraph (k) of this AD: At the next scheduled fuel tank entry after the effective date of this AD, or within 49,000 flight hours after May 1, 2006 (the effective date of AD 2006-06-14, Amendment 39-14523 (71 FR 15023, March 27, 2006)), whichever occurs first, perform a special detailed inspection of the wing tank to determine which type of magnetic fuel level indicators (MFLI) are installed, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-28-1209, dated December 12, 2011. A review of airplane maintenance records is acceptable in lieu of this inspection, if the part number and the type of the installed MFLI can be conclusively determined from that review. Paragraphs (i)(1) through (i)(11) of this AD identify the affected MLFI part numbers.
(1) 3508802-24.
(2) 3508802-25.
(3) 3508802-26.
(4) 3508802-27.
(5) 3508802-28.
(6) 3508802-34.
(7) 3508802-39.
(8) 3508802-74.
(9) 3508802-75.
(10) 3508802-76.
(11) 3508802-91.
Note 1 to paragraph (i) of this AD: The affected MFLI have the `S'-shaped lock-wire design.
If, during the inspection required by paragraph (i) of this AD, a MFLI with the `S' shaped lock-wire design (Part Number (P/N) listed in paragraphs (i)(1) through (i)(11) of this AD) is found, then at the next scheduled fuel tank entry after the effective date of this AD, or within 49,000 flight hours after May 1, 2006 (the effective date of AD 2006-06-14, Amendment 39-14523 (71 FR 15023, March 27, 2006)), whichever occurs first, replace the affected MFLI with a serviceable part and accomplish the corrective actions (repair), as applicable, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A320-28-1209, dated December 12, 2011. For the purpose of this AD, a serviceable part is a composite MFLI, or a metallic MFLI with the top stop retained by a `trapped wire,' as applicable to the location identified in Table 1 of paragraph (j) of this AD.
| MFLI P/N | Applicable Location (FIN) |
|---|---|
| 3508802-35 | 56/57QM |
| 3508802-36 | 58/59QM |
| 3508802-37 | 60/61QM |
| 3508802-38 | 62/63QM |
Airplanes on which Airbus Modification (mod) 27496 has been embodied in production, and on which no wing tank MFLI replacement with a part number listed in paragraphs (i)(1) through (i)(11) of this AD has been made since first flight, are not affected by the requirement of paragraph (i) of this AD.
As of the effective date of this AD, do not install on any airplane a MFLI with a part number listed in paragraphs (i)(1) through (i)(11) 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.
