Airworthiness Directive · Amendment 39-15593 · Stabilizers
Gulfstream Aerospace LP Model Astra SPX, 1125 Westwind Astra, and Gulfstream 100 Airplanes
This AD applies to Gulfstream Aerospace LP Model Astra SPX, 1125 Westwind Astra, and Gulfstream 100 airplanes; certificated in any category; serial numbers 004 through 158.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions.
(1) Within 30 days after the effective date of this AD: Revise the Limitations section of the AFM by incorporating the information in the applicable Israel Aircraft Industries (Gulfstream) temporary revisions (TR): Astra AFM TR 15; Astra SPX AFM TR 8; or Gulfstream 100 AFM TR 1; all dated June 14, 2007; into the Limitations section of the Gulfstream Astra, Astra SPX, or Gulfstream 100 AFM, as applicable. The TRs limit the normal use of reverse thrust to idle.
Note 1: The actions required by paragraph (f) of this AD may be done by inserting a copy of Israel Aircraft Industries (Gulfstream) Astra AFM TR 15; Astra SPX AFM TR 8; or Gulfstream 100 AFM TR 1; all dated June 14, 2007; as applicable; into the Limitations section of the Gulfstream Astra, Astra SPX, or Gulfstream 100 AFM, as applicable. When the applicable TR has been included in the general revisions of the applicable AFM, the general revisions may be inserted in the AFM.
(2) For all airplanes: Within 25 flight hours or 30 days after the effective date of this AD, whichever comes first, do the inspections specified in paragraphs (f)(2)(i) and (f)(2)(ii) of this AD in accordance with Part A of Gulfstream Alert Service Bulletin 100-55A-293, dated June 22, 2007.
(i) Visually inspect the attachment bolts and replace any damaged bolt before further flight.
(ii) Perform a detailed visual inspection of fittings with part number (P/N) 25W357222-501-51, and fillers with P/N 25W4011001-003, and surrounding structure for damage. If blind bolts with P/N MS21141U0612 are installed and no damage is found, no further action is required. If any damage is found, before further flight, repair using a method approved in accordance with the procedures specified in paragraph (g)(2) of this AD. If any bolt with P/N AN173C11 is installed and damage is found, replace the bolt and do all related investigative and applicable corrective actions before further flight.
(3) For Model 1125 Westwind Astra airplanes (serial numbers 004, 011 through 072 inclusive, and 073 through 078 inclusive): Within 12 months after the effective date of this AD, replace all P/N AN173C11 bolts, and do all related investigative and applicable corrective actions before further flight, as detailed in Part B of Gulfstream Alert Service Bulletin 100-55A-293, dated June 22, 2007. Accomplishment of Part B of the alert service bulletin constitutes terminating action for paragraph (f)(1) of this AD. Israel Aircraft Industries (Gulfstream) TR 15 may be deleted and unlimited use of reverse thrust is allowed per the Gulfstream Astra AFM.
Note 2: Reverse thrust limitations remain in effect for Model Astra SPX and Gulfstream 100 airplanes.
Note 3: This AD differs from the MCAI and/or service information as follows: Compliance Time: The compliance time required by the MCAI or service information for performing the AFM revision is immediate on receipt of this AD; however, to avoid inadvertently grounding airplanes, this AD requires performing the AFM revision within 30 days after 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.
