Airworthiness Directive · Amendment 39-17080 · Fuel
Airbus Airplanes
This AD applies to Airbus Model A300 B4-601, B4-603, B4-620, B4-622, B4-605R, B4-622R, F4-605R, F4-622R, and C4-605R Variant F airplanes, and Model A310-203, -204, -221, -222, -304, -322, -324, and -325 airplanes; certificated in any category; all certified models, all manufacturer serial numbers.
We are superseding an existing airworthiness directive (AD) for all Airbus Model A300 B4-600, B4-600R and A300 F4-600R series airplanes, Model A300 C4-605R Variant F airplanes, and Model A310 series airplanes. That AD currently requires modifying the wiring in the right-hand electronics rack. This new AD requires replacing the cockpit multi-tank indicators (MTI), and for certain airplanes, replacing high-level, low-level, and overflow sensors and their harness connectors, and re-instating the low-level warning indication to the cockpit MTI. This AD was prompted by reports of failures of four fuel level sensor-amplifier and MTI units. This AD also adds Model A310 series airplanes to the applicability. We are issuing this AD to prevent degradation of the electrical insulation sleeves of the low- level indication lamps on the MTI, which could cause a short circuit that might result in high voltage being conveyed to the high- and low- level sensors in the wing tanks. This condition could cause the level sensor to heat above acceptable limits, possibly resulting in a fuel tank explosion, and consequent loss of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
(1) This paragraph restates the actions and compliance times required by paragraph (f) of AD 2009-02-04, Amendment 39-15794 (74 FR 7792, February 20, 2009), with no changes. For Model A300-600 airplanes: Unless already done, within 3 months after March 27, 2009 (the effective date of AD 2009-02-04), modify the wiring in the right-hand electronics rack in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28A6096, Revision 02, dated July 4, 2008. Doing the required actions in paragraph (h) or (i) of this AD, as applicable, terminates the actions required by this paragraph.
(2) This paragraph provides credit for the modification required by paragraph (g)(1) of this AD, if the modification was performed before March 27, 2009 (the effective date of AD 2009-02-04) using Airbus Mandatory Service Bulletin A300-28A6096, dated October 19, 2007; or Revision 01, dated April 16, 2008.
For Model A300-600 series airplanes on which Airbus modification 06213 has been embodied in production: Within 24 months after the effective date of this AD, do the actions required by paragraphs (h)(1), (h)(2), and (h)(3) of this AD. Doing the actions in this paragraph terminates the requirements of paragraph (g)(1) of this AD.
(1) Replace the cockpit MTI, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28-6101, dated June 4, 2008.
(2) Before further flight after doing the replacement specified in paragraph (h)(1) of this AD: Replace the high-level, low-level, and overflow sensors and their harness connectors, with fused sensors and new harness connectors, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28-6095, Revision 01, dated February 2, 2010.
(3) Before further flight after doing the replacement specified in paragraph (h)(2) of this AD: Re-instate the low-level warning indication to the cockpit MTI, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28-6103, Revision 01, dated May 18, 2010.
For Model A300-600 series airplanes on which Airbus modification 06213 has not been embodied in production: Within 24 months after the effective date of this AD, do the actions required by paragraphs (i)(1), (i)(2), and (i)(3) of this AD. Doing the actions in this paragraph terminates the requirements of paragraph (g)(1) of this AD.
(1) Replace the cockpit MTI, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28-6101, dated June 4, 2008.
(2) Before further flight after doing the replacement specified in paragraph (i)(1) of this AD: Re-instate the low-level warning indication to the cockpit MTI, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28-6103, Revision 01, dated May 18, 2010.
(3) Before further flight after doing the action specified in paragraph (i)(2) of this AD: Replace the high-level, low-level, and overflow sensors and their harness connectors, with fused sensors and new harness connectors, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A300-28-6095, Revision 01, dated February 2, 2010.
For Model A310 series airplanes: Within 24 months after the effective date of this AD, replace the cockpit MTI, in accordance with the Accomplishment Instructions of Airbus Mandatory Service Bulletin A310-28-2167, dated June 4, 2008.
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.
