A321 flight crew reported they were not issued a frequency change to the tower and landed without a ...

Narrative:

We landed without landing clearance from the tower. Approach vectored us to intercept the localizer; just prior to intercepting localizer; approach changed runway to the left runway. The captain changed the runway in the FMS. I referenced the jeppesen chart for new runway. Approach gave us another heading; then cleared us back to the right runway and the controller apologized for confusion. The captain updated the FMS. I referenced original chart for the right runway. We intercepted the localizer and were cleared for the approach. Approach instructed us to maintain 170 knots until the final approach fix. I did not hear a frequency change to tower as I was focused on configuring the aircraft to ensure a stable approach. After landing; we exited the runway. The captain noticed he had not switched to tower and he contacted tower for instructions. Tower cleared us to cross and contact ground.approach initially cleared us to descend via the arrival except to maintain 11;000 feet. We were kept high throughout the arrival. We were cleared initially for the right runway; then just prior to intercepting localizer; we were cleared to the left runway and then again to the right runway. This resulted in increased task saturation and increased focus on configuring the aircraft due to the close proximity to the airport. Ensure both pilots confirm 'cleared to land' prior to landing.

Original NASA ASRS Text

Title: A321 flight crew reported they were not issued a frequency change to the Tower and landed without a clearance.

Narrative: We landed without landing clearance from the Tower. Approach vectored us to intercept the localizer; just prior to intercepting localizer; Approach changed runway to the left runway. The Captain changed the runway in the FMS. I referenced the Jeppesen chart for new runway. Approach gave us another heading; then cleared us back to the right runway and the Controller apologized for confusion. The Captain updated the FMS. I referenced original chart for the right runway. We intercepted the localizer and were cleared for the approach. Approach instructed us to maintain 170 knots until the Final Approach Fix. I did not hear a frequency change to Tower as I was focused on configuring the aircraft to ensure a stable approach. After landing; we exited the runway. The Captain noticed he had not switched to Tower and he contacted Tower for instructions. Tower cleared us to cross and contact Ground.Approach initially cleared us to descend via the arrival except to maintain 11;000 feet. We were kept high throughout the arrival. We were cleared initially for the right runway; then just prior to intercepting localizer; we were cleared to the left runway and then again to the right runway. This resulted in increased task saturation and increased focus on configuring the aircraft due to the close proximity to the airport. Ensure both pilots confirm 'cleared to land' prior to landing.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1586996
Time
Date	201810
Local Time Of Day	0601-1200
Place
Locale Reference	SFO.Airport
State Reference	CA
Environment
Flight Conditions	IMC
Aircraft 1
Make Model Name	A321
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Multiengine Flight Crew Instrument
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Procedural Landing Without Clearance Inflight Event / Encounter Unstabilized Approach

A321 flight crew reported they were not issued a frequency change to the tower and landed without a clearance.