Here is a timeline of events in the Clutha helicopter tragedy:

2013

November 29:

A Police Scotland helicopter, a Eurocopter EC135, crashes on to the roof of the Clutha pub in Glasgow at about 10.25pm.

November 30:

Eight people are confirmed dead. Thirty-two are being treated at hospitals across the city.

December 1:

Hundreds attend a Glasgow Cathedral service to remember the victims and their loved ones.

December 2:

Nine people are confirmed dead as the remains of the aircraft are removed from the Clutha. A minute's silence is held in George Square.

December 3:

Nick Clegg, then deputy prime minister, visits the scene. Glasgow comedian Billy Connolly also pays his respects, laying flowers at the site.

A fund to help bereaved relatives and survivors of the crash is opened by the city council.

December 6:

The Prince of Wales visits the crash scene and signs the city's book of condolence.

December 7:

The first of the funerals for those who died, captain David Traill, takes place at Glasgow University.

December 9:

The Air Accidents Investigation Branch (AAIB) says it has found no initial evidence of engine or gearbox failure in the helicopter.

December 12:

A tenth person dies a fortnight after the crash. Joe Cusker had been receiving treatment at Glasgow Royal Infirmary since the incident.

2014

February 14:

An interim air accident report by the AAIB finds that both engines failed on the helicopter.

November 28:

A concert takes place at Glasgow's Barrowlands to launch the Clutha Trust, which aims to help disadvantaged young people.

November 29:

The first anniversary of the crash is marked with a memorial service at Glasgow Cathedral and a minute's silence at the scene of the crash.

2015

February 8:

It emerges that First Minister Nicola Sturgeon has raised concerns about the speed of the helicopter crash investigation in a letter to Prime Minister David Cameron.

June 24:

The Prince of Wales and Duchess of Cornwall visit the Clutha and meet owner Alan Crossan, who says the bar is almost ready to reopen.

July 24:

Families of the victims, survivors and members of the emergency services who dealt with the crash, along with First Minister Nicola Sturgeon, attend the reopening of the Clutha.

October 21:

Families say they have been left with unanswered questions after private meetings with the AAIB in Glasgow ahead of publication of the final report into the crash.

October 23:

The AAIB publishes the final report into the crash, finding that the helicopter did not land within the recommended 10-minute period after the activation of low fuel warnings for "unknown reasons".

The report recommended that all police helicopters be equipped with black box flight recording equipment.

The Crown Office announces that a Fatal Accident Inquiry will be held into the tragedy.

 

Here is a timeline of the flight of the helicopter which crashed into the Clutha on November 29 2013, killing ten people.

8.44pm - The helicopter left Glasgow City Heliport with 400kg of fuel onboard. After attending jobs in the Oatlands area of the city to assist with a search for a missing person believed to have been struck by a train, and a routine surveillance job in Dalkeith, Midlothian, the helicopter began its journey back towards Glasgow.

9.45pm - Helicopter flies back towards Glasgow from Dalkeith with approximately 192kg of fuel remaining.

9.56pm - Edinburgh air traffic controllers request that pilot informs them when he needs to contact air traffic control in Glasgow and are told there is no known traffic to affect the helicopter en route. Pilot advises the helicopter is routing south of Shotts, North Lanarkshire.

9.58pm - Pilot advises Edinburgh he is contacting air traffic controllers in Glasgow.

9.59pm - He calls air traffic control in Glasgow and informs them of helicopter's position, and that it is heading to Bothwell, South Lanarkshire. Air traffic controllers clear the helicopter to enter the Glasgow control zone.

Timing unknown - Helicopter shows low fuel warnings before reaching Bothwell. These are acknowledged by the pilot.

10.06pm - Helicopter arrives at Bothwell with about 122kg of fuel remaining and carries out a routine surveillance task which takes about two minutes.

10.09pm - It flies north-west to and commences a three-minute surveillance task at Uddingston, South Lanarkshire, with 113kg of fuel.

10.14pm - It flies to North Lanarkshire for a further surveillance task at Bargeddie.

10.19pm - Pilot informs air traffic controllers they are complete in the Bothwell area and are returning to Glasgow City Heliport. Fuel is calculated at 88kg and there is no indication of any fault or concern from the pilot. No further radio transmissions are received by the pilot.

10.21pm - As the helicopter tracks to the heliport, the right engine flames out. About 32 seconds later, the left engine flames out.

10.22pm - Warning captions, alerting that the rotor speed is decreasing, are illuminated and extinguished twice, before re-illuminating and staying on for remainder of flight. The last recorded radar position shows the helicopter at 390ft close to the accident site.