Airworthiness Directive · Amendment 39-11631 · Airbus Model A319, A320, A321, A330, and A340 Series Airplanes
Airbus Model A319, A320, A321, A330, and A340 Series Airplanes
Model A319, A320, A321, A330, and A340 series airplanes, certificated in any category, as follows:
1. Model A319, A320, and A321 series airplanes on which Airbus Modification 28578 (Airbus Service Bulletin A320-34-1191, dated July 12, 1999), or Airbus Modification 28579 (Airbus Service Bulletin A320-34-1196, dated July 15) has not been accomplished; equipped with a LITTON Global Positioning Satellite Signal Unit (GPSSU) having Part Number (P/N) 465205-0302-0303 installed in accordance with Airbus Service Bulletin A320-34-1119 (Airbus Modification 23885).
2. Model A330 series airplanes on which Airbus Modification 46961 (Airbus Service Bulletin A330-34-3082, Revision 01, dated September 28, 1999), or Airbus Modification 47327 (Airbus Service Bulletin A330-34-3086, Revision 01, dated September 28, 1999) has not been accomplished; equipped with a LITTON GPSSU having P/N 465205-0302-0302 or 465205-0302-0303.
3. Model A340 series airplanes on which Airbus Modification 46961 (Airbus Service Bulletin A340-34-4089, Revision 01, dated September 28, 1999), or Airbus Modification 47327 (Airbus Service Bulletin A340-34-4092, Revision 01, dated September 28, 1999) has not been accomplished; equipped with a LITTON GPSSU having P/N 465205-0302-0302 or 465205-0302-0303.
Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been otherwise modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (d) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A319, A320, A321, A330, and A340 series airplanes, that requires revising the Airplane Flight Manual to provide the flight crew with certain instructions associated with the Global Positioning System (GPS). This amendment also requires modification of the Global Positioning System Signal Unit (GPSSU) of the satellite navigational system. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent position and altitude errors due to bad oscillator warm-up characteristics of the GPSSU, which could result in navigational errors that may exceed 0.5 nautical mile.
To prevent position and altitude errors due to bad oscillator warm-up characteristics of the GPSSU, which could result in navigational errors that may exceed 0.5 nautical mile, accomplish the following:
AFM Revision
(a) Within 10 days after the effective date of this AD, revise the Limitations
Section of the FAA-approved Airplane Flight Manual (AFM) to include the following procedures. This may be accomplished by inserting a copy of this AD in the AFM.
“Operation:
—GPS Stand-alone and GPS overlay non-precision approaches are not allowed.
—The GPS must be deselected before non-precision approach.
—The GPS must be deselected for the remainder of the flight if ‘NAV FM/GPS POS DISAGREE’ ECAM warning is triggered (in all phases of flight).
Dispatch:
—If one GPS is inoperative, GPS must be deselected.”
Note 2: The AFM revision may be accomplished by inserting a copy of Airbus Temporary Revision (TR) 2.05.00/40 (for Model A319, A320, and A321 series airplanes); TR 2.05.00/38 (for Model A330 series airplanes); or TR2.05.00/47 (for A340 series airplanes); into the applicable AFM.
(b) Within 2 months after the effective date of this AD, modify the GPSSU of the satellite navigational system, in accordance with (b)(1), (b)(2), or (b)(3) of this AD, as applicable. After accomplishment of the modification, the AFM revision required by paragraph (a) of this AD may be removed from the AFM.
(1) For Model A319, A320, and A321 series airplanes: Modify the GPSSU in accordance with either Airbus Service Bulletin A320-34-1191, dated July 12, 1999, or Airbus Service Bulletin A320-34-1196, dated July 15, 1999.
(i) If modification of the GPSSU is accomplished in accordance with Airbus Service Bulletin A320-34-1191, prior to or concurrent with accomplishment of the modification, accomplish either Airbus Service Bulletin A320-34-1119, Revision 02, dated April 30, 1997, or A320-34-1196, dated July 15, 1999.
(ii) If modification of the GPSSU is accomplished in accordance with Airbus Service Bulletin A320-34-1196, prior to or concurrent with accomplishment of the modification, accomplish Airbus Service Bulletin A320-34-1119, Revision 02, dated April 30, 1997.
(2) For Model A330 series airplanes: Modify the GPSSU in accordance with either Airbus Service Bulletin A330-34-3082, Revision 01, dated September 28, 1999, or Airbus Service Bulletin A330-34-3086, Revision 01, dated September 28, 1999.
(i) If modification of the GPSSU is accomplished in accordance with Airbus Service Bulletin A330-34-3082, Revision 01, prior to or concurrent with accomplishment of the modification, accomplish either Airbus Service Bulletin A330-34-3015, dated April 3, 1995, or Airbus Service Bulletin A330-34-3086, Revision 01, dated September 28, 1999.
(ii) If modification of the GPSSU is accomplished in accordance with Airbus Service Bulletin A330-34-3086, Revision 01, prior to or concurrent with accomplishment of the modification, accomplish Airbus Service Bulletin A330-34-3015, dated April 3, 1995.
(3) For Model A340 series airplanes: Modify the GPSSU in accordance with either Airbus Service Bulletin A340-34-4089, Revision 01, dated September 28, 1999, or Airbus Service Bulletin A340-34-4092, Revision 01, dated September 28, 1999.
(i) If modification of the GPSSU is accomplished in accordance with Airbus Service Bulletin A340-34-4089, Revision 01, prior to or concurrent with accomplishment of the modification, accomplish either Airbus Service Bulletin A340-34-4022, dated April 3, 1995, or Airbus Service Bulletin A340-34-4092, Revision 01, dated September 28, 1999.
(ii) If modification of the GPSSU is accomplished in accordance with Airbus Service Bulletin A340-34-4092, Revision 01, prior to or concurrent with accomplishment of the modification, accomplish either Airbus Service Bulletin A340-34-4022, dated April 3, 1995, or Airbus Service Bulletin A340-34-4078, Revision 01, dated November 26, 1999, including Appendix 01, dated November 26, 1999.
Note 3: The Airbus service bulletins reference LITTON Service Bulletin 2001-34-13, dated July 8, 1999, and LITTON Service Bulletin 2001-34-14, dated July 5, 1999, as additional sources of service information for modifying the GPSSU.
(c) As of the effective date of this AD, no person shall install on any airplane a GPSSU having P/N 465205-0302-0302 or 465205-0302-0303.
