CTHIn ForceLegislation
AD/PREMIER/5 - Cabin Altitude and Barometric Pressure Switches
Hawker Beechcraft (Raytheon) 390 Series Hawker Beechcraft (Raytheon) 390 Series Aeroplanes
Start here
Get a plain-English read of Hawker Beechcraft (Raytheon) 390 Series
Turn the raw legal text into a practical explanation grounded in AD/PREMIER/5 - Cabin Altitude and Barometric Pressure Switches.
Hawker Beechcraft (Raytheon) 390 Series Aeroplanes
| AD/PREMIER/5 | Cabin Altitude and BarometricPressure Switches | 12/2008 DM |
|---|
| Applicability: | Model 390 aeroplanes, serial numbers RB-1 and RB-4 through RB-238 inclusive. |
|---|---|
| Requirement: | 1. If not previously accomplished, modify the cabin barometric pressure switch and cabin altitude high switch installations in accordance with Hawker Beechcraft Mandatory Service Bulletin SB 21-3899, original issue, dated May 2008. |
| 2 Perform a functional test of the switches and related systems in accordance with Part I - Ground Test Method in Paragraph 3 of the Accomplishment Instructions of SB 21-3899, original issue. | |
| Note 1: If, before the effective date of this Directive, the flight test method in Part II of the Accomplishment Instructions of SB 21-3899, original issue, was carried out, then the Requirement 2 functional test is not required provided it was done after the Requirement 1 modification was accomplished. | |
| 3. The flight test method described in Part II of the Accomplishment Instructions of SB 21-3899, original issue, is prohibited. | |
| Later revisions of the above SB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2008-21-04, are considered acceptable for compliance with the equivalent Requirements of this Directive. | |
| Note 2: FAA AD 2008-21-04 Amdt 39-15688 refers. | |
| Compliance: | For Requirement 1 - Within 25 hours time-in-service (TIS) after 20 October 2008 (the effective date of this Directive) or within 30 days after 20 October 2008, whichever occurs first. |
| For Requirement 2 - Before further flight after the Requirement 1 modification of the cabin barometric pressure switch and cabin altitude high switch installations is accomplished. | |
| For Requirement 3 - After the effective date of this Directive. | |
| This Airworthiness Directive becomes effective on 20 October 2008. |
| Background: |
|---|