Advisory Circulars

Advisory Circulars are issued to provide guidance to the industry on subjects related to procedures.

Air Operations

Subject Notice. No Date
Aircraft Delivery Recommendation Report (PDF, 41KB)
 AC AOC-41(0) 1 Jan 2018
Assignment of Aircraft Registration Marks (PDF, 29 KB) AC AOC-40(0)
 24 Nov 2017
ANR 91 - General Operating Rules
Guidance on General Requirements in ANR-91 (PDF, 122 KB)
 AC 91-1-1 17 Sep 2018
Guidance on Operational Procedures for ANR-91 Operations (PDF, 157 KB)
 AC 91-2-1(1) 4 Nov 2021
Reporting and Investigation of Reportable Safety Matters (PDF, 216KB) AC 91-2-2 (2) 8 Jan 2024
Global Reporting Format (GRF) for Runway Surface Conditions (PDF, 257KB) AC 91-2-3 4 Nov 2021
Guidance on Instrument and Equipment Requirements in ANR-91 (PDF, 105 KB) AC 91-6-1 (1) 14 Feb 2019
Halon Replacement for Fire Extinguishing Agents (PDF, 125KB) AC 91-6-2  9 Feb 2023 
Guidance on Maintenance Requirements in ANR-91 (PDF, 402KB) AC 91-7-1 6 Apr 2020
Guidance on Continuing Airworthiness Management for General Aviation Operators (PDF, 153KB) AC 91-7-2 20 Jul 2022
ANR 98 - Special Operations
Application for an Approval to Conduct a Special Operation (PDF, 160 KB)
 AC 98-1-1 17 Sep 2018
Operational Approval to Conduct Operations in North Atlantic High Level Airspace (PDF, 105 KB)
 AC 98-2-1 17 Sep 2018
Operational Approval for Area Navigation RNAV-10 (PDF, 111 KB)
 AC 98-2-2 17 Sep 2018
Operational Approval for Area Navigation RNAV-5 (PDF, 111 KB)
 AC 98-2-3 17 Sep 2018
Operational Approval for Area Navigation RNAV-2 AND RNAV-1 (PDF, 122 KB)
 AC 98-2-4 17 Sep 2018
Operational Approval for Required Navigation Performance RNP-4 (PDF, 118 KB)
 AC 98-2-5 17 Sep 2018
Operational Approval for Required Navigation Performance Approach (RNP APCH) (PDF, 152 KB)
 AC 98-2-6 17 Sep 2018
Operational Approval for Barometric Vertical Navigation (BAROVNAV) (PDF, 132 KB)
 AC 98-2-7 17 Sep 2018
Required Navigation Performance Authorisation Required Approach (RNP ARAPCH) (PDF, 330 KB)
 AC 98-2-8 17 Sep 2018
Operational Approval for RNP-1 (PDF, 344 KB)
 AC 98-2-9
 1 Nov 2019
Operational Approval for RNP-2 (PDF, 319 KB)
 AC 98-2-10
 1 Nov 2019
Reduced Vertical Separation Minima (RVSM) (PDF, 112 KB)
 AC 98-3-1 17 Sep 2018
Low Visibility Operations (LVO) (PDF,433 KB) AC 98-4-1 (1) 29 Jul 2019
Head-Up Display/Enhanced Vision System (HUD/EVS) (PDF, 340 KB)
 AC 98-5-1 17 Sep 2018
Controller Pilot Data Link Communications and Automatic Dependent Surveillance-Contract (CPDLC and ADS-C) (PDF, 112 KB)
 AC 98-6-1 17 Sep 2018
Automatic Dependent Surveillance-Broadcast (ADS-B) (PDF, 106 KB)
 AC 98-6-2 17 Sep 2018
Electronic Flight Bag (EFB) (PDF, 252 KB) AC 98-7-1 17 Sep 2018
Extended Diversion Time Operations (EDTO) (PDF, 152 KB)
 AC 98-8-1 17 Sep 2018
Polar Route Operations (PDF, 116 KB)
 AC 98-9-1 17 Sep 2018
Operation of Single-Engine Turbine-Powered Aeroplane at night and/or Instrument Meter Conditions (PDF, 112 KB)
 AC 98-11-1 17 Sep 2018
Performance-based Communication & Performance-based Surveillance (PDF, 174 KB)
 AC 98-12-1 17 Sep 2018
ANR 99 - Breath Testing for Alcohol
Guidance on Airline Alcohol Management Programme (AAMP) (PDF, 295 KB)
 AC 99-3-1 (1)
 12 Feb 2020
ANR 119 - Air Operator Certification
Guidance on the Application for a Singapore AOC (PDF, 194 KB) AC 119-1-1 17 Sep 2018
Guidance on AOC Certification Requirements (PDF, 272KB) AC 119-2-1 (1) 26 Nov 2021
Safety Management System–Safety Performance Indicators for an AOC Holder (PDF, 139 KB)
 AC 119-2-2 17 Sep 2018
Implementation of FDAP (PDF, 133 KB)
 AC 119-2-3 17 Sep 2018
Implementation of an AOC Holder’s Safety Management System (PDF, 642 KB)
 AC 119-2-4 (0) 7 Feb 2020
Guidance on AOC Operating Requirements (PDF, 105 KB)
 AC 119-3-1 17 Sep 2018
Aircraft Leasing (PDF, 161 KB)
 AC 119-3-2 (1) 14 Sep 2021
ANR 121 - Commercial Air Transport by Large Aeroplanes
Guidance on General Requirements in ANR-21 (PDF, 403 KB)
 AC 121-1-1 (1) 19 Sep 2019
Use of Portable Electronic Devices Onboard Aircraft (PDF, 152 KB)
 AC 121-1-2 17 Sep 2018
Carriage of Service Animals in the Passenger Cabin (PDF, 140 KB)
 AC 121-1-3 17 Sep 2018
Carriage of Oversized or Odd-sized Items in the Passenger Cabin (PDF, 113 KB)
 AC 121-1-4 17 Sep 2018
Guidance on Operational Procedures for ANR-121 Operations (PDF, 216 KB)
 AC 121-2-1 (3) 18 Nov 2021
Approach and Landing Accident Reduction Measures (PDF, 139 KB)
 AC 121-2-2 17 Sep 2018
Standard Operating Procedures for Flight Crew Members (PDF, 183 KB)
 AC 121-2-3 17 Sep 2018
Flight Crew Procedures and Training During Taxi Operations (PDF, 143 KB)
 AC 121-2-4 17 Sep 2018
Preventing Injuries caused by Turbulence (PDF, 150 KB)
 AC 121-2-5 17 Sep 2018
Mode Awareness and Energy State Mgt Aspects of Flight Deck (PDF, 159 KB) AC 121-2-6 17 Sep 2018
Management of Lithium Batteries in the Aircraft Passenger Cabin (PDF, 135 KB)
 AC 121-2-7 17 Sep 2018
Level of Rescue and Fire Fighting Service Protection Available (PDF, 129 KB)
 AC 121-2-8 17 Sep 2018
Procedures for Cabin Crew (PDF, 304 KB)
 AC 121-2-9 (1) 20 Jan 2020
Aircraft Tracking (PDF, 248 KB) AC 121-2-10 (1) 9 Nov 2021
Aircraft Cargo Compartment Safety (PDF, 214KB) AC 121-2-11 18 Nov 2021
Guidance on Operating Limitations for ANR-121 Operations (PDF, 106 KB)
 AC 121-3-1 17 Sep 2018
Guidance on Mass and Balance for ANR-121 Operations (PDF, 102 KB)
 AC 121-4-1 17 Sep 2018
Carriage of Cargo in Passenger Cabin (PDF, 160 KB)
 AC 121-4-2 (2) 23 Dec 2021
Guidance on Instrument and Equipment Reqt in ANR-121 (PDF, 199KB)
 AC121-6-1 (5)
 18 Nov 2021
Effectiveness of TAWS/EGPWS Equipment (PDF, 111 KB)
 AC 121-6-2 17 Sep 2018
Acceptable Child Restraint Devices (PDF, 497 KB)
 AC 121-6-3 (1) 19 Sep 2019
Acceptable Restraint Devices for Passengers with Restricted Mobility (PDF, 302 KB)
 AC 121-6-4 (0)
 19 Sep 2019
Guidance on Maintenance Requirements for Operations under ANR-121 (PDF, 200KB) AC 121-7-1 (1) 13 Oct 2021
Aircraft Network Security Programme (PDF, 144KB)
 AC 121-7-2 (1) 11 Nov 2020
Guidance on Crew Requirements for ANR-121 Operations (PDF, 414 KB)
 AC 121-8-1 (1) 24 Aug 2020
Cabin Safety for Airbus A380 Aircraft (PDF, 117 KB)
 AC 121-8-2 17 Sep 2018
Attire of Crew Members (PDF, 96 KB)
 AC 121-8-3 17 Sep 2018
Guidance on Crew Training for ANR-121 Operations (PDF, 191 KB) AC 121-9-1 (1) 3 Jan 2022
Flight Crew Training for an ANR-121 Operations (PDF, 128 KB)
 AC 121-9-2 17 Sep 2018
Cabin Crew Training for ANR-121 Operations (PDF, 109 KB)
 AC 121-9-3 17 Sep 2018
Flight Dispatcher Training and Appointment (PDF, 131 KB)
 AC 121-9-4 17 Sep 2018
Safety and Emergency Procedures Training (PDF, 513 KB)
 AC 121-9-5(1) 30 Jun 2020
Training on Approach and Landing Accidents Reduction (ALAR) and Controlled Flight into Terrain (CFIT) Prevention (PDF, 122 KB)
 AC 121-9-6 17 Sep 2018
Guidelines for the Design and Implementation of Line Oriented Flight Training (LOFT) (PDF, 162 KB)
 AC 121-9-7 17 Sep 2018
Training on Crew Resource Management (PDF, 137 KB)
 AC 121-9-8 17 Sep 2018
Guidance for Training on the use of Ground Proximity Warning System (GPWS) (PDF, 143 KB)
 AC 121-9-9 17 Sep 2018
Upset Prevention and Recovery Training (UPRT) (PDF, 413 KB) AC 121-9-10(1) 2 Aug 2022 
Guidance on Crew Competency for ANR-121 Operations (PDF, 172 KB)
 AC 121-10-1 17 Sep 2018
Guidance on Fatigue Risk Management for ANR-121 Operations (PDF, 147KB)
 AC 121-11-1 17 Sep 2018
Fatigue Risk Management for Ultra Long Range Operations (PDF, 126 KB)
 AC 121-11-2 17 Sep 2018
Guidance on Logs and Records for ANR-121 Operations (PDF, 113 KB)
 AC 121-12-1 17 Sep 2018
Operations Manual for Operations under ANR-121 (PDF, 172 KB)
 AC 121-12-2 17 Sep 2018
ANR 125 - Complex General Aviation
Application for a Complex General Aviation Certificate (CGAC) (PDF, 172 KB)
 AC 125-1-1 17 Sep 2018
ANR 135 - Commercial Air Transport by Helicopters and Small Aeroplanes
Guidance on General Requirements in ANR-135 (PDF, 120 KB)
 AC 135-1-1 17 Sep 2018
Guidance on Operational Procedures for ANR-135 Operations (PDF, 485 KB)
 AC 135-2-1 (1) 21 Dec 2018
Guidance on Operating Limitation for ANR-135 Operations (PDF, 106 KB) AC 135-3-1 17 Sep 2018
Guidance on Mass and Balance for ANR-135 Operations (PDF, 107 KB)
 AC 135-4-1 17 Sep 2018
Guidance on Instrument and Equipment in ANR-135 (PDF, 416 KB) AC 135-6-1 (1) 21 Dec 2018
Guidance on Maintenance for Operations under ANR-135 (PDF, 166 KB) AC 135-7-1 17 Sep 2018
Guidance on Crew Requirements for ANR-135 Operations (PDF, 98 KB)
 AC 135-8-1 17 Sep 2018
Guidance on Crew Training for ANR-135 Operations (PDF, 128 KB) AC 135-9-1 17 Sep 2018
Flight Crew Training for ANR-135 Operations (PDF, 127 KB) AC 135-9-2 17 Sep 2018
Cabin Crew Training for ANR-135 Operations (PDF, 107 KB) AC 135-9-3 17 Sep 2018
Guidance on Crew Competency for ANR-135 Operations (PDF, 139 KB)
 AC 135-10-1 17 Sep 2018
Guidance on Fatigue Risk Management for ANR-135 Operations (PDF, 148 KB)
 AC 135-11-1 17 Sep 2018
Guidance on Logs and Records for ANR-135 Operations (PDF, 113 KB) AC 135-12-1 17 Sep 2018
Operations Manual for ANR-135 Operations (PDF, 168 KB) AC 135-12-2 17 Sep 2018
ANR 137 - Aerial Works
Guidance on the Application for an Aerial Work Certificate (AWC) (PDF, 184 KB)
 AC 137-1-1 17 Sep 2018

Carriage of Dangerous Goods

ANR 92 - Carriage of Dangerous Goods    
Subject Notice. No Date
Administrative Relief from Technical Instructions Compliance (PDF, 137 KB)  AC 92-4-1 30 Dec 2022
Reporting of Dangerous Goods Occurrences (PDF, 111 KB)  AC 92-3-2 30 Dec 2022 
Competency-Based Dangerous Goods Training Programme (PDF, 512 KB)  AC 92-3-1(1) 12 Jan 2024 
Guidance on Fulfilling Shipper's Responsibilities (PDF, 1MB)  AC 92-2-4 21 Nov 2023 
Guidance on Approvals Related to the Conveyance of Dangerous Goods in Air Mail (PDF, 108 KB)  AC 92-2-3 30 Dec 2022
Guidance on Dangerous Goods Carried in Passenger and Crew Baggage (PDF, 141 KB) AC 92-2-2(1) 11 May 2023
Guidance on Carriage of Lithium Batteries as Cargo (PDF, 127 KB)  AC 92-2-1 30 Dec 2022 
     
Subject  Notice. No  Date 
Competency-based Dangerous Goods Training Programmes (PDF, 235KB)

 Cancelled 30 Dec 2022
Procedures for Controlling the Introduction of Dangerous Goods in Air Mail (PDF, 197KB) Cancelled 30 Dec 2022
Guidance for Carriage of Baggage Equipped with Lithium Batteries (PDF, 103 KB) Cancelled 30 Dec 2022
Guidance for Carriage of Personal Transportation Devices Powered by Small Lithium Battery (PDF, 34 KB) Cancelled 30 Dec 2022
Guidance for Carriage and Prohibition of Use of Electronic Cigarettes by Passengers and Crew (PDF, 48 KB) Cancelled 30 Dec 2022
New ICAO Requirements for the Carriage of Lithium Batteries by Air effective 1 January 2013 Cancelled 1 Feb 2013
Carriage of Electric Mobility Aids by Air (PDF, 174 KB) Cancelled 30 Dec 2022
Retention of Dangerous Goods or Munitions of War (MOW) (PDF, 25 KB) Cancelled 30 Dec 2022
Exemptions for the Carriage of Forbidden Dangerous Goods by Air into and out of Singapore (PDF, 34 KB) Cancelled 30 Dec 2022
Mandatory Reporting of Dangerous Goods Incidents and Accidents (PDF, 27 KB) Cancelled 30 Dec 2022
Guidance for carriage of lithium batteries by air (PDF, 223KB) Cancelled 30 Dec 2022
Munitions of War (MOW) (PDF, 432 KB) Cancelled 1 Sep 2020

Foreign Operator Surveillance

Subject Notice. No Date
Foreign Operator Surveillance Programme-Operations Permit (PDF,108 KB) AC FOS-1(2) 29 Jul 2015


Safety Information Bulletin

Safety Information Bulletin is issued to provide safety knowledge to our aviation partners for their awareness and adjustment to their operations as necessary.

Air Operations

Subject

Notice. No

Date

Implementation of cold temperature altitude corrections at "Cold Temperature Restricted Airports" in the USA (PDF, 194KB)

CAAS SIB 2015-04

9 Mar 2015

Prevention of Low Speed at High Altitudes (PDF, 208KB)

CAAS SIB 2015-07

28 Apr 2015

Potential Irregularities in Implementation of Leap Second Adjustments in GNSS Receivers (PDF, 207KB)

CAAS SIB 2015-09

25 May 2015
Risk of volcanic ash contamination in North Sumatra, Indonesia airspace (PDF, 203KB)
 CAAS SIB 2015-10
 5 Jun 2015
Safety of civil aircraft operating in and around Pyongyang FIR (PDF, 190KB)
 CAAS SIB 2015-14 12 Oct 2015
Management of unreliable airspeed indication at high altitude (PDF, 216KB)
 CAAS SIB 2015-15
 22 Oct 2015
Separation of Engine Fan Cowls on A320/319 Aircraft Types (PDF, 213KB)
 CAAS SIB 2015-16 22 Oct 2015
Risk of tail-strike due to rotation on take-off at erroneous VR (PDF, 210KB)
 CAAS SIB 2015-19
 2 Dec 2015
Defect of Rudder Travel Limiter Unit (RTLU) Electronic Module on Airbus A320 Family Aircraft Types (PDF, 220KB)
 CAAS SIB 2015-20
 31 Dec 2015
Safety of civil aircraft operating in Baghdad FIR (PDF, 211KB)
 CAAS SIB 2015-03 R2
 4 Jan 2016
High Pressure Compressor Blade Fracture on IAE V2500-A5 Engine (PDF, 211KB)
 CAAS SIB 2016-01
 11 Jan 2016
Safety of civil aircraft operating in Yemen airspace and Sanaa FIR (PDF, 572KB)
 CAAS SIB 2015-05 R3
 6 May 2022
Use of Erroneous Parameters at Take-off (PDF, 222KB)
 CAAS SIB 2016-02 10 Mar 2016
Operating under the influence of any Psychoactive Substance (PDF, 94KB)
 CAAS SIB 2016-03 10 Aug 2016
Checklist Usage in General Aviation (PDF, 198KB)
 CAAS SIB 2016-05
 22 Nov 2016
Safety of civil aircraft operating in Somalia airspace (PDF, 571KB)
 CAAS SIB 2015-08 R4
 6 May 2022
Safety of civil aircraft operating in Tripoli FIR (PDF, 572KB)
 CAAS SIB 2015-01 R3
 6 May 2022
Possible interference and / or disruption to GPS navigation systems when operating in the Incheon (RKRR) FIR (PDF, 212KB)
 CAAS SIB 2015-13 R2
 30 May 2018
Safety of civil aircraft operating over the Sea of Japan and/or in the Fukuoka FIR (RJJJ) (PDF, 60KB)
 CAAS SIB 2018-02 30 May 2018
Safety of civil aircraft operating in Jeddah FIR (PDF, 574KB)
 CAAS SIB 2018-03 R1
 6 May 2022
Safety of civil aircraft operating in Sudan and South Sudan airspace (PDF, 574KB)
 CAAS SIB 2015-18 R5
 6 May 2022
Safety of civil aircraft operating in Kenya airspace (PDF, 374KB)
 CAAS SIB 2018-01 R1
 17 Sep 2018
Prohibition of use of psychoactive substances (PDF, 617KB)
 CAAS SIB 2018-04 20 Sep 2018
Safety of civil aircraft operating in Cairo FIR (PDF, 580KB)
 CAAS SIB 2015-17 R4
 6 May 2022
Safety of civil aircraft in the overwater airspace above the Persian Gulf and the Gulf of Oman Region  (PDF, 374KB) CAAS SIB 2019-01 R1
 9 Jan 2020
Safety of civil aircraft operating in Baghdad, Syria, Damascus and Tehran FIRs (PDF, 579KB) CAAS SIB 2015-12 R18
 6 May 2022
Safety of flights through Pakistan and Afghanistan airspace (PDF, 575KB) CAAS SIB 2015-02 R14
 6 May 2022
COVID-19: Potential hazards and risks associated with the upsurge of AOC operations (PDF, 247KB) CAAS SIB 2020-01 R1
 1 Oct 2021
Safety of civil aircraft operating in Ukraine Airspace (PDF, 134KB) CAAS SIB 2015-11 R6
 25 Feb 2022
Global Navigation Satellite System (GNSS) outages and disturbances (PDF, 171KB) CAAS SIB 2022-01 R3
 11 Jan 2024
Safety of civil aircraft operating in Mali airspace within Niamey FIR (PDF, 638KB)
 CAAS SIB 2022-02
 6 May 2022

Carriage of Dangerous Goods

Subject

Notice. No

Date

Carriage of Samsung Galaxy Note 7 mobile phones by passengers and in the cargo hold (PDF, 93KB)

CAAS SIB 2016-04

9 Sep 2016

Carriage of dangerous goods cargo and postal mail in passenger aircraft repurposed for the carriage of cargo (PDF, 132KB)

 CAAS SIB 2020-03

4 Dec 2020
Carriage of dry ice on aircraft to facilitate the transport of COVID-19 vaccines (PDF, 172KB)
 CAAS SIB 2020-04
 31 Dec 2020

Foreign Operator Surveillance

Subject

Notice. No

Date