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AD/HS 125/178 - Air Conditioning - Fan Venturi Motor
British Aerospace BAe 125 Series AeroplaBritish Aerospace BAe 125 Series Aeroplanes
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British Aerospace BAe 125 Series Aeroplanes
| AD/HS 125/178 | Air Conditioning - Fan Venturi Motor | 5/2006 |
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| Applicability: | Raytheon Model DH.125, HS.125 and BH.125 series aeroplanes; Model BAe.125 Series 800A (C-29A and U-125), 800B, 1000A and 1000B aeroplanes; Model Hawker 800 (including variant U-125A) and 1000 aeroplanes all identified in Raytheon Service Bulletin SB 21-3669, dated December 2004. |
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| Requirement: | 1. If not previously accomplished, carry out either of the flowing actions in accordance with the Accomplishment Instructions of Raytheon Service Bulletin SB 21-3669: |
| a. Modify the existing fan venturi part number (P/N) 132322-2-1 by installing an improved motor, P/N 207640-34. | |
| b. Replace the existing fan venturi P/N 132322-2-1 with a new fan venturi P/N 132322-3-1. | |
| Note 1: Raytheon Service Bulletin SB 21-3669 refers to Honeywell Service Bulletin 132322-21-4041, Revision 2, dated 20 August 2004, as an additional source of service information for doing the modification. The Raytheon service bulletin includes the Honeywell service bulletin. | |
| 2. Fan venturi, P/N 132322-2-1, may not be installed on any aeroplane as a replacement part unless the fan venturi has been modified in accordance with Requirement 1.a. or unless the fan venturi has a new P/N in accordance with Requirement 1.b. | |
| Later revisions of the above Raytheon SB, approved by the United States Federal Aviation Administration (FAA) as an Alternate Method of Compliance (AMOC) to FAA AD 2006-01-04, are considered acceptable for compliance with the equivalent Requirements of this Directive. | |
| Note 2: FAA AD 2006-01-04 Amdt 39-14443 refers. | |
| Compliance: | For Requirement 1 - Within 1,200 hours time in service or 24 months after the effective date of this Directive, whichever occurs first. |
| For Requirement 2 - As of the effective date of this Directive. | |
| This Airworthiness Directive becomes effective on 11 May 2006. |
| Background: | This Directive supersedes AD/HS 125/141 which applied to Raytheon aeroplanes identified above. That Directive required a visual inspection to determine whether adequate clearance exists between the fan venturi motor casing and the adjacent equipment together with any necessary adjustments. The Directive also required a visual inspection to detect signs of overheating, degradation of insulating materials, and ingestion of debris into the motor together with the replacement of discrepant parts with serviceable parts. |
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