Airworthiness Directive · Amendment 39-19491 · Wings
Airbus SAS Airplanes
This AD applies to the Airbus SAS airplanes, certificated in any category, identified in paragraphs (c)(1) and (c)(2) of this AD.
(1) Model A350-941 airplanes, manufacturer serial numbers (MSNs) 203, 205, 208, 209, 210, 212, 213, 218, 219, 221, 227, 228, and 235.
(2) Model A350-1041 airplanes, MSN 188.
We are adopting a new airworthiness directive (AD) for certain Airbus SAS Model A350-941 and -1041 airplanes. This AD was prompted by a report of a close gap between the wing lower cover (WLC) and wing rib feet. This AD requires revising the operator's minimum equipment list (MEL) to change certain MEL items. This AD also requires an inspection for discrepancies and structural damage of certain wing rib foot locations, and related investigative and corrective actions if necessary. We are issuing this AD to address the unsafe condition on these products.
Within 30 days after the effective date of this AD, revise the operator's MEL to prohibit dispatch of the airplane with any inoperative MEL item listed in figure 1 to paragraphs (g) and (i) of this AD.
| Sequence No. | Item |
|---|---|
| 21-09-01 | AIR OVHT ON FUEL INERTING 1(2) Message. |
| 21-09-03 | AIR PRESS LO ON FUEL INERTING 1(2) Message. |
| 21-50-01 | Air conditioning Pack. |
| 21-50-02C | Pack 1 Valve—Both valves inoperative. |
| 21-50-03C | Pack 2 Valve—Both valves inoperative. |
| 21-50-04B | Pack Flow Sensor—Both sensors inoperative on the same pack. |
| 21-50-07C | Pack Ram Air Inlet Door—Associated pack considered inoperative. |
| 21-50-08A | Pack Ram Air Outlet Door—Failed open. |
| 21-50-08C | Pack Ram Air Outlet Door—Associated pack considered inoperative. |
| 21-50-09B | Pack Control Channel—Both channels inoperative. |
| 21-58-01 | Fuel Inerting Inlet Valve. |
| 21-58-02 | Fuel Inerting Inlet Valve Flap. |
| 21-58-03 | Fuel Inerting Ram Air Outlet Flap. |
| 21-58-04 | Fuel Inerting Temperature Control Valve. |
| 21-58-05 | Fuel Inerting Turbine Valve. |
| 21-60-02C | Hot Air Valve—Associated pack valves deactivated. |
| 36-11-01 | Engine Bleed Air System. |
| 36-11-02 | Engine Bleed Valve. |
| 36-11-03 | Engine Bleed Fan Air Valve. |
| 36-11-04 | Engine Bleed Overpressure Valve. |
| 36-11-05A | Engine Bleed IP Check Valve—Associated Bleed Considered Inoperative. |
| 36-11-09 | Engine Bleed Control. |
| 36-11-10 | Engine Bleed Monitoring. |
| 36-11-11 | Engine Bleed Monitoring and Control. |
| 36-11-12 | Engine Bleed Temperature Redundancy. |
| 42-11-06 | CPIOM H43. |
| 42-11-07 | CPIOM H44. |
| 42-41-16 | CRDC B01. |
| 42-41-17 | CRDC B02. |
| 42-41-18 | CRDC B03. |
| 42-41-20 | CRDC B05. |
| 42-41-21 | CRDC B06. |
| 47-10-01 | FTIS. |
Within 3 months after the effective date of this AD, accomplish a detailed inspection to detect discrepancies and structural damage at the wing rib foot locations specified in, and in accordance with Airbus Alert Operators Transmission A57P011-18, dated October 8, 2018.
(1) If any discrepancy is detected, do all applicable related investigative and corrective actions before further flight, in accordance with Airbus Alert Operators Transmission A57P011-18, dated October 8, 2018.
(2) If any structural damage is detected, before further flight obtain corrective actions approved by the Manager, International Section, Transport Standards Branch, FAA; or the European Aviation Safety Agency (EASA); or Airbus SAS's EASA Design Organization Approval (DOA) and accomplish the corrective actions within the compliance time specified therein. If approved by the DOA, the approval must include the DOA-authorized signature.
After accomplishment of the inspection and all applicable related investigative and corrective actions required by paragraph (h) of this AD on an operator's fleet, the MEL revision specified in paragraph (g) of this AD is no longer required by this AD, and the provisions for relief for the affected MEL items in figure 1 to paragraphs (g) and (i) of this AD may be restored, provided those items are not otherwise restricted by the existing master minimum equipment list (MMEL).
Although Airbus Alert Operators Transmission A57P011-18, dated October 8, 2018, specifies sending inspection results to Airbus, this AD does not require a report.
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.
Aircraft
