Type Category Description Models affected Date Reference
Service Bulletin Mandatory Lubricating Oil Pump - Operating Logic Turbines originally manufactured by English Electric, GEC and Ruston with the following model numbers: EA1, EA2, DEA2, AP1, EM85, EM610, EAS1, ELM, ERB1, EO1, EO2, DE02, OP1, RLM and TD. 18th, October 2017

SB/GEN/17-003

Service Information Letter Transition duct heat shield replacement All GEC and AEI Gas Turbine Packages 2017

SIL/GEN/17-004

Notice to Operators Notification Precautions to avoid a potential cyber attack from Wannacrypt/WannaCry Ransomware on computer systems All operators, in particular those using unsupported Microsoft Windows operating systems such as Windows 2000 or in particular XP SP3. Installations where the control system network could be part of a wider network or PC hardware susceptible to external input such as USB sticks. 17th, May 2017

NTO/GEN/17-005

Service Bulletin Advisory Recommended maintenance frequency and life estimates for core components of the EAS1 Power Turbine All EAS1 Power Turbines (PTs) 2nd, January 2017

SB/EAS/10-017

Notice to Operators Mandatory Excessive main casing temperatures All DEA2 Power Turbines 7th, April 2016

NTO/DEA2/16-002

Notice to Operators DATA RECORD SHEET FOR NTO/EA2/16-003 Excessive main casing temperatures All EA2 Power Turbines 7th, April 2016

NTO/EA2/16-003

DATA

Service Information Letter The importance of recording hours, starts and engine history All GEC and AEI Gas Turbine Packages 5th, April 2016

SIL/GEN/16-003

Notice to Operators Notification Greenray Certificate of authenticity for core power turbine components GEC and Ruston with the following model numbers: EA1, EA2, DEA2, AP, EM85, EM610, EAS1, ELM, ERB1, EO1, EO2, OP1, RLM and TD 3rd, April 2016

NTO/GEN/16-004

Service Bulletin Mandatory Turbine exhaust diffuser and volute inspection All GEC EAS1 Power Turbines 11th, February 2016

SB/EAS/16-023

Service Bulletin Recommended Upgrading of Gas Generator lubrication system All GEC Gas Turbine packages fitted with an Avon Gas Generator 8th, February 2016

SB/EAS/16-022

Service Bulletin Recommended Replacement of Gas Generator Transition Duct All GEC Gas Turbine packages fitted with transition duct between the gas generator and power turbine. 8th, February 2016

SB/EAS/16-020

Service Bulletin Recommended Upgrading of Gas Generator lubrication system All AEI Gas Turbine packages fitted with an Avon Gas Generator 8th, February 2016

SB/AEI/16-001

Service Bulletin Recommended Safe handling and transportation of rotor All EAS1 Power Turbine rotors 3rd, February 2016

SB/EAS/16-021

Service Bulletin Recommended Replacement of Gas Generator Transition Duct All AEI Gas Turbine packages fitted with a transition duct between the gas generator and power turbine. 2nd, February 2016

SB/AEI/16-002

Service Bulletin Recommended Upgrading of disc space sealing All GEC Gas Turbine package models EAS133 and 134 Power Turbines (excluding model EAS135) 28th, January 2016

SB/EAS/16-019

Service Bulletin Recommended Inspection of Avon vent ducting All GEC DEA2 and EA2 units 21st, January 2016

SB/EA/16-001

Service Bulletin Recommended 19"" Rack and governor (MKI & MKII) - Power supply connections All machines fitted with GEC 19"" rack governors 2010

SB/GEN/10-002

Service Information Letter Recommended Rotor blade component life extension All gas turbine packages manufactured by GEC Gas Turbines Ltd incorporating English Electric and Associated Electrical Industries (AEI). These include the models EA1, EA2, DEA2, EO2, DEO2, EASI, ERB1, AP1, OP1 and EM610. 1st, January 2010

SIL/GEN/10-002

Service Bulletin Advisory Power Turbine Disc Security All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-018

Service Bulletin Recommended GEC Gas turbine control system obselscence All Avon, RB211, Olympus Gas Turbine Packages, together with the EM610 and EM85 Gas Turbines throughout the world. This includes all base load, two shift/peak lopping and black start units. 1st, January 2010

SB/GEN/10-001

Service Bulletin Advisory Introduction of Rolls Royce Avon 200 Gas Generator to EAS1 Power Turbines Also other Avon based Gas Turbines such as the: EA1, EA2, DEA2 and AP1 1st, January 2010

SB/EAS/10-014

Service Bulletin Recommended EAS1 Pedestal cooling air channel All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-015

Service Bulletin Recommended Blockage of pedestal drain All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-016

Service Bulletin Recommended Corrosion of Power Turbine rotor assembly All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-012

Service Bulletin Recommended Importance of auxiliary service alarms All remotely operated EAS1 Power Turbines (PTs) sets without remote lubricating oil temperature monitoring 1st, January 2010

SB/EAS/10-013

Service Bulletin Recommended Shaft vibration monitoring All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-007

Service Bulletin Recommended Cooling air manifold and nozzle assembly All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-008

Service Bulletin Recommended Power Turbine (PT) rotor blade track All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-009

Service Bulletin Mandatory N5 Ignitor units (110/120vdc) All EAS1 type Power Turbines (PTs) fitted with N5 igniter units 1st, January 2010

SB/EAS/10-005

Service Bulletin Recommended Rolls Royce (RR) Avon air to exhaust volute seal failure All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-006

Service Bulletin Recommended EAS1 Cooling air manifold All EAS1 Power Turbines (PTs) in particular those operating in a corrosive atmosphere, coastal areas or offshore. 1st, January 2010

SB/EAS/10-001

Service Bulletin Recommended Rolls Royce Avon Gas Generator All EAS1 Power Turbines (PTs) supported on mounting trunnions 1st, January 2010

SB/EAS/10-002

Service Bulletin Advisory Power Turbine Rotor blade inspection All EAS1 Power Turbines (PTs) 1st, January 2010

SB/EAS/10-004

Service Bulletin Mandatory Defective power turbine first stage rotor blades ERB1-24 Power Turbine manufacturers reference numbers as follows: GT533, GT572, GT597 and GT606 1st, January 2004

SB/ERB/04-001

Service Bulletin Advisory Life estimates for the core components of the ERB1-24C PT,All ERB1 - 24C Power Turbines (PTs) All ERB1 - 24C Power Turbines (PTs) 1st, January 2001

SB/ERB/01-001

Service Bulletin Recommended Stator ring stage 1, material change All ERB124C Turbines 1st, January 1999

SB/ERB/99-001

Service Bulletin Advisory Inspection record sheets All ERB124C Turbines 1st, January 1998

SB/ERB/98-015

Service Bulletin Recommended Power Turbine inlet duct assembly All ERB124C Turbines 1st, January 1998

SB/ERB/98-016

Service Bulletin Advisory Borescope inspection power turbine All ERB1-24 Turbines 1st, January 1998

SB/ERB/98-017

Service Bulletin Recommended ERB124C Stage 1 stator re-stagger requirements, All ERB124C Turbines 1st, January 1998

SB/ERB/98-013

Service Bulletin Recommended Position error and mini performance tests All ERB124C Turbines 1st, January 1998

SB/ERB/98-014

Service Bulletin Advisory Life estimates for the core components of the ERB124C PT All ERB124C Turbines 1st, January 1998

SB/EAS/98-010

Service Bulletin Recommended Inspection of Power Turbine exhaust diffuser deflectors All ERB124C Turbines 1st, January 1998

SB/ERB/98-011

Service Bulletin Advisory Sealing strip material changes to stage stator 1 and stage 2 shroud extension All ERB124C Turbines 1st, January 1998

SB/ERB/98-012

Service Bulletin Advisory Power Turbine design clearances and concession request All ERB124C Turbines 1st, January 1998

SB/ERB/98-007

Service Bulletin Recommended Power Turbine cooling air system health monitoring: Measurement of power turbine cooling air mass flow and associated parameters All ERB124C Turbines 1st, January 1998

SB/ERB/98-008

Service Bulletin Advisory Power Turbine: Stage 1 stator cooling air thermocouple replacement All ERB124 Turbines 1st, January 1998

SB/ERB/98-009

Service Bulletin Recommended Power Turbine (PT) Rotor blade inspection requirements All ERB124C Turbines 1st, January 1998

SB/ERB/98-004

Service Bulletin Recommended Power Turbine inner inlet duct assembly: Shear ring attachment & revised cold build clearances All ERB124C Turbines 1st, January 1998

SB/ERB/98-005

Service Bulletin Recommended ERB124C: Centre bolt and nut assembly and disassembly sequence and associated problems All ERB124C Turbines 1st, January 1998

SB/ERB/98-006

Service Bulletin Recommended Stage 2 stator shroud extension: Material & Design change to location dowel All ERB124C Turbines 1st, January 1998

SB/ERB/98-002

Service Bulletin Advisory Dimensional checks on the power turbine inlet ducting assembly & associated RB211 parts All ERB124C Turbines 1st, January 1998

SB/ERB/98-003

Service Bulletin Optional Power Turbine inlet duct assembly All ERB124C Turbines 1st, January 1992

SB/ERB/92-001