{"id":"F2006B09623","name":"AD/F100/22 - Passenger Service Units","slug":"ad-f100-22-passenger-service-units","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":54396,"registerId":"commonwealth-F2006B09623-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/F100/22 - Passenger Service Units","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nFokker F100 (F28 Mk 100) Series Aeroplanes\n\nAD/F100/22 Passenger Service Units 4/99\n\nApplicability: F.28 Mk.0100 aircraft, serial numbers 11244 through 11437, if equipped with Grimes Aerospace Passenger Service Units, Part Number (P/N) 10-1178-( ), all serial numbers.\n\nRequirement: Modify affected Grimes Aerospace Passenger Service Units in accordance with Fokker Service Bulletin (SB) F100-25-061 dated 8 March 1994, and Grimes Aerospace SB 10-1178-33-0036 dated 14 May 1993 and SB 10-1178-33-0039\n\nRevision 1 dated 31 October 1193.\n\nNote: RLD BLA 94-078(A) refers.\n\nCompliance: Unless already accomplished, before 22 July 1999.\n\nThis Airworthiness Directive becomes effective on 22 April 1999.\n\nBackground: Through service experience with the F.28 Mk.0100 aircraft, it has been determined that the NO SMOKING and FASTEN SEATBELTS signs, installed in the overhead Passenger Service Units, may not be sufficiently readable to each seated passenger under all probable conditions of cabin illumination.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD's scope is limited to specified serial-numbered F.28 Mk.0100 aircraft with Grimes PSUs P/N 10-1178-( ) and prescribes a modification to those units to improve sign readability (Applicability; Requirement; Background). It does not expand to other aircraft types, additional equipment, or broader operational rules; obligations remain the operator's responsibility to implement by the stated compliance date (Compliance)."},"complexity_factors":["Narrow technical scope: applies only to F.28 Mk.0100 aircraft serial numbers 11244–11437 and to Grimes PSUs with P/N 10-1178-( ) (Applicability).","Prescriptive modification work: requires following multiple external service bulletins (Fokker SB F100-25-061 and Grimes SBs 10-1178-33-0036 and -0039 Revision 1) which operators must obtain and implement (Requirement).","Compliance deadline and effective date impose scheduling pressure on operators and maintenance providers (Compliance; \"This AD becomes effective on 22 April 1999\"; Compliance date: before 22 July 1999).","Operational burden falls to aircraft owners/operators to arrange and pay for the modification and any downtime for maintenance (Requirement & Compliance).","Traceability/document control: AD references a revision and a related document (RLD BLA 94-078(A)), requiring correct identification of bulletin revisions and records (Requirement; Note).","Low regulatory discretion: the AD mandates modification rather than optional measures, leaving little room for alternative compliance without further approval (Requirement & Compliance).","Safety-driven trigger: Background cites in-service readability concern for NO SMOKING and FASTEN SEATBELTS signs, which defines the permitted scope of corrective action (Background)."],"plain_english_summary":"Requires operators of specified Fokker F100 (F.28 Mk.0100) aeroplanes (serials 11244–11437) fitted with Grimes Passenger Service Units (P/N 10-1178-( )) to modify those overhead units following the listed Fokker and Grimes service bulletins. The change is aimed at improving the readability of NO SMOKING and FASTEN SEATBELTS signs under varying cabin lighting conditions and must be done by the compliance date."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, one-off safety directive addressing a specific technical defect in specific aircraft. It has not expanded beyond its original purpose of ensuring sign visibility in passenger service units."},"complexity_factors":["Single, specific applicability (one aircraft type, defined serial number range, specific part numbers)","Single requirement (modify units per specified service bulletins)","Single compliance deadline with no conditional exceptions","No defined terms section","No cross-references to other legislation or regulations (only references to technical service bulletins)","Short document (approximately 150 words)"],"plain_english_summary":"This is a **safety order** (called an \"Airworthiness Directive\") issued by Australia's aviation safety regulator (CASA) that applies to specific **Fokker F100 aircraft**.\n\n**What it does:**\n- Requires airlines or aircraft owners to **modify the overhead passenger service units** (the panels above seats with lights, air vents, and signs) on certain Fokker F100 planes.\n- Specifically, it fixes a problem where the **\"NO SMOKING\" and \"FASTEN SEATBELTS\" signs** might not be visible enough to passengers in all lighting conditions.\n\n**Who it affects:**\n- Owners and operators of Fokker F100 aircraft (serial numbers 11244 through 11437) that have **Grimes Aerospace** passenger service units installed (part numbers starting with 10-1178).\n\n**What must be done:**\n- The units must be modified following specific technical instructions from **Fokker** and **Grimes Aerospace** service bulletins (official repair notices).\n- This had to be completed **before 22 July 1999** (if not already done).\n\n**Why it matters:**\n- Passenger safety. If passengers can't clearly see the \"fasten seatbelt\" or \"no smoking\" signs, they might not follow critical safety instructions during turbulence or emergencies."}},"importantCases":[],"_links":{"self":"/api/acts/ad-f100-22-passenger-service-units","history":"/api/acts/ad-f100-22-passenger-service-units/history","analysis":"/api/acts/ad-f100-22-passenger-service-units/analysis","conflicts":"/api/acts/ad-f100-22-passenger-service-units/conflicts","importantCases":"/api/acts/ad-f100-22-passenger-service-units/important-cases","documents":"/api/acts/ad-f100-22-passenger-service-units/documents"}}