AIRWORTHINESS DIRECTIVE
CAA-AD-083/2001
Date of issue: September 13, 2001
HELICOPTER – CHIP DETECTOR – INSPECTION/REPAIR
Applicability:
Bell Helicopter Textron Canada (BHTC)
Model 206A, 206B and 206L Series helicopters, equipped with Tedeco B3l88B and
B4093 chip detector assemblies.
Effective date: November 01, 2001.
Compliance : Required as indicated in TC AD CF-2001-33.
Remarks:. The compliance of this AD must
be recorded in Aircraft Logbook, where applicable the requirements of this AD
must be integrated into Aircraft Technical Documentation. Address inquiries
concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyne
Airport, 160 08 Prague 6, Czech Republic, tel: 420 2 33320922, fax: 420 2
20562270
Ing. Pavel MATOUŠEK
Director of Airworthiness Division
CAA CZ
Number: CF-2001-33
Subject: BeII206A, 206B and
206L-Chip Detector Assembly (Tedeco B3188B and B4093)
Effective: 30 September
2001
Applicability: Bell Helicopter
Textron Canada (BHTC) Model 206A, 206B and 206L Series helicopters, equipped
with Tedeco B3l88B and B4093 chip detector assemblies.
Compliance: Within 60 days
from the effective date of this directive, unless already accomplished.
Background: Bell Helicopter
Textron Canada (BHTC) has become aware that Tedeco B3l88B and B4093 chip
detectors installed on Model 206A, 206B and 206L Series helicopters could
possibly have poor or no continuity between the insert and the chip detector
housing. This could result in no chip indication when the chip detector has
been bridged by metal particles. BHTC and EATON TEDECO PRODUCTS have issued
Alert Service Bulletins requiring a continuity test and temporary repair of the
affected chip detectors. This directive mandates these Alert Service Bulletins
(ASB).
Corrective Actions: Verify
and repair Tedeco chip detectors as follows:
(i) For Bell 206A and 206B helicopters: Perform a continuity test and repair
in accordance with BHTC ASB 206-01-96, Rev. A, or later Transport Canada
approved revisions;
(ii) For Bell 206L helicopters: Perform a continuity test and repair in
accordance with BHTC ASB 206L-01-119, Rev. A, or later Transport Canada
approved revisions;
(iii) Check spare units by test using the appropriate BHTC ASB identified
above; and
(iv) If the units are repaired, replace them within 300 hours air time
with new chip detectors, but no later than 31 March 2002.
Authorization: For Minister
of Transport
B. Goyaniuk
Chief, Continuing Airworthiness
Contact: Mr. Luc Deniger,
Continuing Airworthiness, Ottawa, telephone (613) 952-5385, facsimile (613)
996-9178 or e-mail denigel@tc.gc.ca or any Transport Canada Centre.