{"id":"F2008L02853","name":"AD/CL-600/102 - Wing Anti-ice Piccolo Ducts","slug":"ad-cl-600-102-wing-anti-ice-piccolo-ducts","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":74727,"registerId":"commonwealth-F2008L02853-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Bombardier (Canadair) CL-600 (Challenger","sectionType":"division","heading":"Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes","content":"### Bombardier (Canadair) CL-600 (Challenger) Series Aeroplanes\n\n| AD/CL-600/102 | Wing Anti-ice Piccolo Ducts | 9/2008 |\n| ------------- | --------------------------- | ------ |\n\n| Applicability: | Bombardier Inc. Models:CL-600-1A11 - Serial Numbers (S/N) 1004 through 1085.CL-600-2A12 - S/N 3001 through S/N 3066.CL-600-2B16 - S/N 5001 through S/N 5194.CL-600-2B16 - S/N 5301 through S/N 5635. |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Applicable to:CL-600-1A11 S/N 1004 through S/N 1085.CL-600-2A12 S/N 3001 through S/N 3066.CL-600-2B16 Serial Numbers 5001 through 5194 and 5301 through 5635.(a) Amend the AFM Normal and Abnormal Procedures by inserting the applicable Temporary Revision (TR) or Revision listed below, or later approved changes to the applicable TR or Revision:PSP 600 (DOT), TR 600/23 dated 16 August 2006PSP 600-1 (DOT), TR 600-1/19 dated 16 August 2006PSP 601-1A, TR 601/27 dated 16 August 2006PSP 601-1A-1, TR 601/15 dated 16 August 2006PSP 601-1B, TR 601/19 dated 16 August 2006PSP 601-1B-1, TR 601/14 dated 16 August 2006PSP 601A-1, TR 601/26 dated 16 August 2006PSP 601A-1-1, TR 601/27 dated 16 August 2006 |\n\n```html\n

PSP 604-1, TR 604/20 dated 17 April 2006

PSP 604-1, Revision 66 dated 1 February 2007

(b) Advise all flight crew of the changes introduced in the applicable AFM TR or Revision.

2. Applicable to:

CL-600-1A11 Serial Numbers 1004 through 1085.

CL-600-2A12 Serial Numbers 3001 through 3066.

CL-600-2B16 Serial Numbers 5001 through 5194 and 5301 through 5468.

(a) Check the aircraft maintenance records to determine if any anti-ice piccolo ducts or complete leading edge sections have been replaced since
1 August 2000.

The aircraft maintenance records up to the accomplishment date of this AD are to be checked, not just to the original release date of the applicable Service Bulletin (SB) (i.e. 30 November 2006) as stated in the Service Bulletins listed in paragraph B.2 below.

(b) If any anti-ice piccolo ducts or complete leading edge sections have been replaced since 1 August 2000, check the serial numbers of the replaced ducts and replace them, as determined necessary, in accordance with the Accomplishment Instructions in the applicable Bombardier Service Bulletin listed below, or later revision approved by the Chief, Continuing Airworthiness, Transport Canada.

Model

Service Bulletin

Date

CL-600-1A11 (CL-600)

SB 600-0734

30 November 2006

CL-600-2A12 (CL-601)

SB 601-0585

30 November 2006

CL-600-2B16 (CL-601-3A/3R)

SB 601-0585

30 November 2006

Cl-600-2B16 (CL-604)

SB 604-30-003 or
SB 604-30-003, Revision 1

30 November 2006
21 January 2008

\n```\n\n```html\n

3. Applicable to:

CL-600-2B16, Serial Numbers 5469 through 5635.

Visually check the anti-ice piccolo ducts and replace them, as determined necessary, in accordance with the Accomplishment Instructions in Bombardier Service Bulletin 604-30-003, basic issue dated 30 November 2006, Revision 1, dated 21 January 2008, or later revision approved by the Chief, Continuing Airworthiness, Transport Canada.

4. Applicable to:

CL-600-1A11 Serial Numbers 1004 through 1085.

CL-600-2A12 Serial Numbers 3001 through 3066.

CL-600-2B16 Serial Numbers 5001 through 5194.

CL-600-2B16 Serial Numbers 5301 through 5635.

No replacement/spare anti-ice piccolo duct with a part number/serial number listed in paragraph 2.C of any of the following Bombardier Service Bulletins, or later revision approved by the Chief, Continuing Airworthiness, Transport Canada, is permitted to be installed on any aircraft.

Model

Service Bulletin

Date

CL-600-1A11 (CL-600)

SB 600-0734

30 November 2006

CL-600-2A12 (CL-601)

SB 601-0585

30 November 2006

CL-600-2B16 (CL-601-3A/3R)

SB 601-0585

30 November 2006

CL-600-2B16 (CL-604)

SB 604-30-003 Revision 1

21 January 2008

Note: Transport Canada AD CF-2008-18 dated 9 May 2008 refers.

Compliance:

For Requirement 1: Within 30 days after the effective date of this AD, unless previously accomplished.

For Requirements 2 and 3: Within 2000 flight hours or 60 calendar months after the effective date of this AD, whichever comes first.

For Requirement 4: From the effective date of this AD.

\n```\n\n| | This Airworthiness Directive becomes effective on 28 August 2008. |\n| ----------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Background: | There have been several cases of wing anti-ice piccolo duct failure reported onCL-600-2B19 (CRJ) aircraft. Although there have been no failures reported on Challenger aircraft, similar ducts are installed on the above Challenger models.Upon investigation, it has been determined that ducts manufactured since June 2000, and installed since 1 August 2000, are susceptible to cracking due to the process used to drill the holes in the ducts. These ducts were installed on CL-600-2B16 aircraft, serial numbers 5469 through 5635 in production, but may also have been installed as replacements on CL-600-1A11, CL-600-2A12 and other CL-600-2B16 aircraft.Cracking of the wing anti-ice piccolo ducts could result in air leakage, with an adverse effect on the anti-ice air distribution pattern and a possible unannunciated insufficient heat condition. As a result, the aeroplane flight manual (AFM) instructions have been revised to provide proper annunciation of an insufficient heat condition, utilizing existing messages and indications, with instructions, to the pilot, to leave icing conditions if sufficient heat cannot be achieved or maintained.This AD mandates the amendment of the AFM procedures, in addition to checking the part numbers and serial numbers of the installed wing anti-ice piccolo ducts and replacing them as necessary. |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n16 July 2008","sortOrder":0},{"sectionNumber":"AD/CL-600/102","sectionType":"part","heading":"AD/CL-600/102","content":"## AD/CL-600/102","sortOrder":1},{"sectionNumber":"Wing Anti-ice Piccolo Ducts","sectionType":"part","heading":"Wing Anti-ice Piccolo Ducts","content":"## Wing Anti-ice Piccolo Ducts","sortOrder":2},{"sectionNumber":"9/2008","sectionType":"part","heading":"9/2008","content":"## 9/2008","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":7,"scope_assessment":{"changed":true,"description":"The AD expands the practical scope compared with the underlying Service Bulletins by requiring maintenance records to be checked up to the AD accomplishment date rather than only to the SB release date (see Requirement 2(a)), thereby capturing replacements installed after the SBs. It also mandates AFM procedure changes (Requirement 1) and imposes an ongoing prohibition on installing listed spare ducts (Requirement 4), broadening both retrospective and prospective coverage."},"complexity_factors":["Multiple models and overlapping serial-number ranges (CL-600-1A11, CL-600-2A12, CL-600-2B16) increasing applicability complexity.","Different actions tied to serial ranges: AFM amendment (Requirement 1), records/part-number checks and replacements (Requirement 2), visual inspections for a specific serial subset (Requirement 3), and an installation prohibition (Requirement 4).","References to several Bombardier Service Bulletins and revisions (different SB numbers and dates) that must be matched to model/serial ranges.","Record-search scope extended beyond original SB release dates: 'records up to the accomplishment date of this AD' must be checked, widening retrospective compliance (Requirement 2(a)).","Staggered compliance windows: 30 days for AFM change, 2000 flight hours or 60 months for inspections/replacements, and immediate effect for the installation ban, creating mixed planning/timing burdens.","Operational/maintenance burden on operators and MROs to identify replaced parts, trace serial numbers, perform inspections/replacements and update AFMs.","Regulatory coordination/approval points: replacements or alternative revisions require approval by the Chief, Continuing Airworthiness, Transport Canada, adding discretionary approval steps."],"plain_english_summary":"This directive requires operators of specified Bombardier CL-600 Challenger series aircraft to amend their flight manuals, check maintenance records for wing anti-ice piccolo ducts installed since 1 August 2000, inspect and replace affected ducts per Bombardier service bulletins, and prohibits installing certain listed spare ducts. It applies to owners/operators and maintenance organisations because ducts manufactured/drilled since June 2000 may crack, which can alter anti-ice airflow and produce an unannunciated insufficient-heat condition for the wing leading edge."},"kimi_summary":{"content_quality":"ok","complexity_score":6,"scope_assessment":{"changed":false,"description":"This AD appears focused and targeted. It addresses a specific manufacturing defect in a specific component (piccolo ducts) on specific aircraft models. The requirements flow logically from the identified safety risk: immediate pilot awareness (flight manual changes), physical inspection/replacement of suspect parts, and prevention of future installation of defective parts. There is no evidence of scope creep beyond the original safety purpose."},"complexity_factors":["Multiple applicability groups with overlapping but distinct serial number ranges across four aircraft models","Four separate requirements with different compliance timeframes (30 days vs 2,000 flight hours/60 months vs immediate)","Extensive cross-referencing to external documents: 8 different Aircraft Flight Manual Temporary Revisions and 4 different Bombardier Service Bulletins","Conditional logic: Requirement 2 only applies if maintenance records show replacements since 1 August 2000","Nested applicability: Serial number ranges for Requirements 2, 3, and 4 overlap partially but not completely, requiring careful parsing","Reference to foreign regulatory approval (Transport Canada Chief, Continuing Airworthiness) for alternative compliance methods","Technical aviation terminology throughout (AFM, TR, SB, piccolo ducts, leading edge sections) requiring domain knowledge"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of certain Bombardier Challenger jets (specific CL‑600 series serial-number ranges) to act to prevent dangerous wing icing from cracked wing anti-ice \"piccolo\" ducts made with a faulty drilling process in mid‑2000. \n\nIt mandates prompt AFM revisions to warn crews, inspections and replacement of suspect ducts or replaced parts, visual checks for factory‑fitted suspect ducts, and a ban on installing affected spare ducts to eliminate undetected anti‑ice failures."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cl-600-102-wing-anti-ice-piccolo-ducts","history":"/api/acts/ad-cl-600-102-wing-anti-ice-piccolo-ducts/history","analysis":"/api/acts/ad-cl-600-102-wing-anti-ice-piccolo-ducts/analysis","conflicts":"/api/acts/ad-cl-600-102-wing-anti-ice-piccolo-ducts/conflicts","importantCases":"/api/acts/ad-cl-600-102-wing-anti-ice-piccolo-ducts/important-cases","documents":"/api/acts/ad-cl-600-102-wing-anti-ice-piccolo-ducts/documents"}}