HEROES; THE MAYOR; TALES FROM THOSE STRANDED; QUESTIONS AND ANSWERS; AND MORE,

Here are frequently asked questions for anyone who may have been impacted by the outage at Hartsfield-Jackson International Airport.

Q: What caused the fire?

A: Georgia Power said it believes a failure of its equipment may have started the fire.

Exact details are unclear, but Mayor Kasim Reed said Georgia Power is discussing building new concrete casing to ensure that another blaze can be contained before it spreads to a backup switch, which is what Reed and the utility’s officials said led to Sunday’s blackout.

Q: Why wasn’t anyone at the airport communicating to the stranded passengers?

A: Though no injuries were reported, the lack of information during the first few hours led to a chaotic scene both inside and outside the airport. Reed apologized Monday for the delays in his response but said officials knew little about the extent of the blaze for hours because it erupted in underground tunnels and needed extensive ventilation to clear noxious fumes.

Q: Why aren’t there emergency lights in each concourse?

A: It is unclear why, but Reed said that the airport would invest in “more aggressive portable lighting capability” to ensure that a power outage doesn’t leave vast parts of the airport dim or darkened again.

Q: Is DeKalb Peachtree Airport an option for diversion flights?

A: No. The operation commonly known as Peachtree DeKalb Airport or PDK is a general aviation airport that does not offer commercial flights.

Q: Where is Lost and Found at Hartsfield-Jackson?

A: If items were left on an airplane or at a gate, contact the airline directly. Items left in the terminal and at security checkpoints are given to ATL’s Lost and Found. A lost item report can be filled out at on the airport’s website: www.atl.com/passenger-information/lost-and-found.

The Lost and Found office is in Domestic Terminal North, upper level, across from American Airlines ticketing. Hours are 8:30 a.m. to 5 p.m. Monday through Friday, excluding holidays.

Q: How are stranded passengers who had checked baggage supposed to get their luggage?

A: Delta has established a dedicated line to assist customers with checked luggage. Customers (including Air France-KLM customers) should call 1-888-9771005 to arrange for baggage delivery. Due to congestion, customers are encouraged to call the dedicated line for assistance rather than going to an airport baggage service office.

Southwest Airlines customers whose destination was Atlanta may visit the Southwest Baggage Service Office near the baggage claim area. All baggage that was scheduled to transfer via Atlanta to another airport will be sent to the customer’s final destination, and the customer will be contacted once the baggage arrives.

Q: Will this be covered by travel insurance if I missed my vacation connection?

A: A travel sales development specialist for Georgia at AAA-the Auto Club Group said travel insurance should cover additional expenses like a hotel, new flights, ground transportation or car rentals, depending on the policy terms.

Q: Will flights later in the week be affected by the outage?

A: The Federal Aviation Administration doesn’t issue a blanket declaration about whether the airport is operating at a normal level. Rather, each airline says whether it is at normal operations. Travelers should still check their flight status.

Q: Will the outage delay holiday package deliveries?

A: Not for two of the nation’s biggest shippers. Representatives for UPS and FedEx said their operations were not disrupted by the closure.

Q: Why weren’t the water fountains working?

A: The lack of electricity was likely the culprit. Hartsfield-Jackson updated its water fountains in 2013 to include water bottle refilling stations. The redesign was part of an effort to cut down on the use of disposable water bottles. The water stations include an electronic sensor that activates the water. Some models work without electricity and can provide water during power outages. It’s unclear whether the stations at the airport use this technology.

Q: What are the phone numbers for Atlanta airport’s passenger airlines?

Domestic carriers

■ Alaska Airlines 800-252-7522

■ American Airlines 800-433-7300

■ Boutique Airlines 855-268-8478

■ Delta Air Lines 800-221-1212

■ Frontier Airlines 800-432-1359

■ JetBlue Airways 800-538-2583

■ Southwest Airlines 800-435-9792

■ Spirit Airlines 801-401-2200

■ United Airlines 800-864-8331

International carriers:

■ Air Canada 888-247-2262

■ Air France 800-237-2747

■ British Airways 800-47-9297

■ KLM Royal Dutch Airlines 800-447-4747

■ Korean Air 800-438-5000

■ Lufthansa German Airline 800-645-3880

■ Qatar Airways 877-777-2827

■ Turkish Airlines 800-874-8875

■ Virgin Atlantic 877-359-8474