SURABAYA, Indonesia (AP) -- An Indonesian helicopter searching for the missing AirAsia jetliner saw two oily spots in the water Monday, and an Australian search plane spotted objects elsewhere in the Java Sea, but it was too early to know whether either was connected to the aircraft and its 162 passengers and crew.
In any case, officials saw little reason to believe AirAsia Flight 8501 met anything but a grim fate after it disappeared from radar Sunday morning over the Java Sea. Wary of bad weather, one of the pilots had asked to raise the plane's altitude just before it vanished, but was not allowed because another aircraft was in the way.
"Based on the coordinates that we know, the evaluation would be that any estimated crash position is in the sea, and that the hypothesis is the plane is at the bottom of the sea," Indonesia search and rescue chief Henry Bambang Soelistyo said.
The Airbus A320-200 vanished in airspace thick with storm clouds on its way from Surabaya, Indonesia, to Singapore.
Jakarta's air force base commander, Rear Marshal Dwi Putranto, said an Australian Orion aircraft had detected "suspicious" objects near Nangka island about 100 miles (160 kilometers) off central Kalimantan. That's about 700 miles (1,120 kilometers) from the location where the plane lost contact, but within Monday's greatly expanded search area.
"However, we cannot be sure whether it is part of the missing AirAsia plane," Putranto said. "We are now moving in that direction, which is in cloudy conditions."
Air Force spokesman Rear Marshal Hadi Tjahnanto told MetroTV that an Indonesian helicopter spotted two oily spots in the Java Sea east of Belitung island, much closer to where the plane lost contact than the objects viewed from the Australian plane. He said oil samples would be collected and analyzed to see if they are connected to the missing plane.
The last communication from the cockpit to air traffic control was a request by one of the pilots to increase altitude from 32,000 feet (9,754 meters) to 38,000 feet (11,582 meters) because of the rough weather. Air traffic control was not able to immediately grant the request because another plane was in the airspace, said Bambang Tjahjono, director of the state-owned company in charge of air-traffic control.
By the time clearance could be given, Flight 8501 had disappeared, Tjahjono said. The twin-engine, single-aisle plane, which never sent a distress signal, was last seen on radar four minutes after the last communication from the cockpit.
First Adm. Sigit Setiayana, the Naval Aviation Center commander at the Surabaya air force base, said 12 navy ships, five planes, three helicopters and a number of warships were taking part in the search, along with ships and planes from Singapore and Malaysia. The Australian air force also sent a search plane.
Many fishermen from Belitung island have joined in the search, and all vessels in that area of the sea have been alerted to be on the lookout for anything that could be linked to the plane.
An Associated Press photographer flew in a C-130 with Indonesia's Air Force for 10 hours Monday over a section of the search area between Kalimantan and Belitung. The flight was bumpy at times and hovered low at 1,500 feet, giving clear visibility to waves, ships and fishermen. But nothing related to the plane was spotted.
The plane's disappearance and suspected crash caps an astonishingly tragic year for air travel in Southeast Asia, and Malaysia in particular. Malaysia-based AirAsia's loss comes on top of the still-unexplained disappearance of Malaysia Airlines Flight 370 in March with 239 people aboard, and the downing of Malaysia Airlines Flight 17 in July over Ukraine, which killed all 298 passengers and crew.
"Until today, we have never lost a life," AirAsia group CEO Tony Fernandes, who founded the low-cost carrier in 2001, told reporters in Jakarta airport. "But I think that any airline CEO who says he can guarantee that his airline is 100 percent safe, is not accurate."
He refused to address compensation issues or any changes that may be made to the airline as a result of this incident.
"We have carried 220 million people up to this point," he said. "Of course, there's going to be some reaction, but we are confident in our ability to fly people, and we'll continue to be strong and continue to carry people who never could fly before."
Nearly all the passengers and crew are Indonesians, who are frequent visitors to Singapore, particularly on holidays.
Ruth Natalia Puspitasari was among them. On Monday, her father, Suyanto, sat with his wife, who was puffy-eyed and coughing, near the family crisis center at Surabaya's airport.
Suyanto remembers the concern his daughter showed for the families of the MH370 tragedy. Puspitasari once told him how sad it must be for the victims' relatives who were left waiting for their loved ones with no certainty.
"Now she is gone in the missing plane, and we should face this sorrow, I can't believe it!" he said, tears rolling down his cracked cheeks. "This is too hard to be faced."
He was still sleeping when Puspitasari left for the airport with her fiance and future in-laws for a New Year's vacation. But he called her just before boarding, and she told him excitedly that they planned to celebrate her 26th birthday in Singapore on Monday.
"I don't want to experience the same thing with what was happened with Malaysia Airlines," he said as his wife wept. "It could be a long suffering."
But while authorities are pessimistic about the plane's fate, it is likely that the search will not be nearly as perplexing as the one for Flight 370. That plane is believed to have been deliberately diverted by someone on board to a remote area of the Indian Ocean where the water is kilometers deep. Flight 8501 vanished over a heavily traveled sea that is about 30 meters deep on average, with no sign of foul play.
Flight 8501 took off Sunday morning from Surabaya, Indonesia's second-largest city, and was about halfway to Singapore when it vanished from radar. The jet had been airborne for about 42 minutes.
The plane had an Indonesian captain, Iryanto, who uses one name, and a French co-pilot, five cabin crew members and 155 passengers, including 16 children and one infant, the airline said in a statement. Among the passengers were three South Koreans, a Malaysian, a British national and his 2-year-old Singaporean daughter. The rest were Indonesians.
AirAsia said the captain had more than 20,000 flying hours, of which 6,100 were with AirAsia on the Airbus 320. The first officer had 2,275 flying hours.
"Papa, come home, I still need you," Angela Anggi Ranastianis, the captain's 22-year-old daughter, pleaded on her Path page late Sunday, which was widely quoted by Indonesian media. "Bring back my papa. Papa, please come home."
At Iryanto's house in the East Java town of Sidoarjo, neighbors, relatives and friends gathered Monday to pray and recite the Quran to support the distraught family. Their desperate cries were so loud, they could sometimes be heard outside where three LCD televisions had been set up to monitor search developments.
"He is a good man. That's why people here appointed him as our neighborhood chief for the last two years," said Bagianto Djoyonegoro, a friend and neighbor.
Many recalled him as an experienced Air Force pilot who flew F-16 fighter jets before becoming a commercial airline pilot.
The lost aircraft had last undergone scheduled maintenance on Nov. 16, according to AirAsia.
The airline has dominated budget travel in Southeast Asia for years, connecting the region's large cities with short routes. It highlights its low fares with the slogan, "Now everyone can fly."
Mason reported from Jakarta. Ali Kotarumalos, Niniek Karmini in Jakarta, Joan Lowy in Austin, Texas, Scott Mayerowitz in New York and Lori Hinnant in Paris contributed to this report.