Here are parking tips, busiest travel days and how to cut your wait in the TSA line at Phoenix Sky Harbor and Phoenix-Mesa Gateway airports.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

Maintenance on an air conditioning unit inside Terminal 4 at Phoenix Sky Harbor International Airport on Wednesday morning resulted in long wait times at security checkpoints for travelers.

Passengers at Terminal 4 of Phoenix Sky Harbor International Airport had a hot morning after the air conditioning was turned off for scheduled maintenance.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

PHOENIX — Phoenix Sky Harbor International Airport says a planned air-conditioning outage impacted the airport Wednesday morning ahead of record-breaking heat.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.

An air conditioning unit in Terminal 4 of the Phoenix Sky Harbor Airport was deactivated for routine maintenance and stayed off longer than expected.