The most serious attempted coup d'état against the government of Philippine President Corazon Aquino was staged beginning December 1, 1989, by members of the Armed Forces of the Philippines belonging to the Reform the Armed Forces Movement (RAM) and soldiers loyal to former President Ferdinand Marcos. Metro Manila was shaken by this Christmas-time coup, which almost seized Malacañang Palace. It was completely defeated by the Philippine government by December 9, 1989.
Background
Philippine politics between 1986 and 1991 was punctuated by Aquino's desperate struggle to survive physically and politically a succession of coup attempts, culminating in a large, bloody, and well-financed attempt in December 1989. This attempt involved upwards of 3,000 troops, including elite Scout Rangers and marines, in a coordinated series of attacks on Camp Crame and Camp Aquinaldo, Fort Bonifacio, Cavite Naval Base, Villamor Air Base, and on Malacañang Palace itself, which was dive-bombed by vintage T-28 aircraft. Although Aquino was not hurt in this raid, the situation appeared desperate, for not only were military commanders around the country waiting to see which side would triumph in Manila, but the people of Manila, who had poured into the streets to just bystand and just watch tanks and troops in February 1986.
Coup
The coup was led by military officers, including Lt. Colonel Gregorio Honasan, General Edgardo Abenina, General Jose Ma. Zumel and Captain Proceso Maligalig, and staged by an alliance of the RAM, led by Honasan, and Zumel. At the onset of the coup, the rebels seized Villamor Airbase, Fort Bonifacio, Sangley Airbase, Mactan Airbase in Cebu, and portions of Camp Aguinaldo. The rebels set patrols around the runway of Ninoy Aquino International Airport effectively shutting it down. From Sangley Airbase, the rebels launched planes and helicopters which bombarded and strafed Malacañang Palace, Camp Crame and Camp Aguinaldo.
Three hours after the fall of Villamor Air Base, Aquino went on air to address the nation, and said that "We shall smash this naked attempt once more". At that point the government counterattack began. Seven army trucks headed for Channel 4, and fierce fighting occurred there. Ramos and Renato de Villa monitored the crises from Camp Crame, the Constabulary headquarters.
With loyal forces hard-pressed by the rebels, Aquino requested U.S. military assistance, at the behest of her military commanders, which was granted. 120 marines, part of an 800-strong U.S. contingent stationed at Subic Naval Base, were deployed at the grounds of the U.S. Embassy as a defensive measure. President Aquino stated that the loyal forces lacked the ability to contain the rebel forces. American help was crucial to the Aquino cause, clearing the skies of rebel aircraft and allowing loyalists to consolidate their forces.
While many mutineers surrendered, Aquino declared: "We leave them two choices; Surrender or die". Government F-5 jets sortied and challenged rebel planes culminating in the destruction of the rebel T-28 Trojans. Government forces recaptured all military bases save for Mactan Airbase by December 3, but rebel forces retreating from Fort Bonifacio occupied 22 high-rise buildings along the Ayala business area in Makati. The government claimed the coup was crushed, but fierce fighting continued through the weekend, with Camp Aguinaldo set ablaze by the rebel howitzers. The occupation of Makati lasted until December 7, while the rebels surrendered Mactan Airbase on December 9. The official casualty toll was 99 dead (including 50 civilians) and 570 wounded.
The United States military supported the Aquino government during this coup. Operation "Classic Resolve" involved the use of US airpower from the aircraft carriers and and F-4 Phantom II fighters from Clark Air Base. The United States Air Force jets retook the skies for Aquino. The US planes had clearance to "...buzz the rebel planes at their base, fire in front of them if any attempted to take off, and shoot them down if they did".