Coup Atlas Research Database
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84001271987AttemptedMilitary coup

Philippines, 1987 — military coup attempt

Philippines (PHL)Southeast Asia, AsiaJanuary 27, 1987

Event Summary

From 27 to 29 January 1987 around one hundred soldiers led by Colonel Oscar Canlas mounted an armed coup attempt against President Corazon Aquino by seizing the main broadcast complex of the GMA Network in Quezon City, while other rebel troops tried in vain to capture the Sangley Point air force base in Cavite. The action was reportedly linked to a plan by the exiled Ferdinand Marcos to stage a dramatic return to the Philippines, and the Marcos loyalist and Reform the Armed Forces Movement elements behind it hoped to spark a wider military revolt against Aquino's not yet one year old government. The rebels held the broadcast station for two days but failed to attract the broad support they needed, and government forces loyal to Aquino contained and defeated the attempt.

One rebel soldier was killed and thirty five people were injured before the mutineers surrendered. Aquino survived this, the third attempt against her, but the recurring plots underscored the persistent instability of the post Marcos transition and the continuing threat from restive factions within the armed forces.

Researched Details

Researched

Independent research, added record by record. Hover any label for what it means.

Target identified in Coup Atlas research: President Corazon Aquino defeated the January 1987 seizure of the GMA broadcast complex by Canlas's rebels
RESEARCHED NAME
Key figures
Corazon Aquino (president of the Philippines, target)
Oscar Canlas (colonel, coup leader)

Sources

From 27 to 29 January 1987, around 100 soldiers led by Colonel Oscar Canlas seized the main compound of GMA Network in Quezon City, while other troops attempted in vain to capture Sangley Point Air Force Base in Cavite.
SOURCE REVIEWED Wikipedia, 1986 to 1987 Philippine coup attempts open source ↗
One rebel soldier was killed and 35 people were injured during the attempt.
SOURCE REVIEWED Wikipedia, 1986 to 1987 Philippine coup attempts open source ↗
The seizure of the radio and television complex in Quezon City was reportedly part of a plan by Marcos to stage a dramatic return from exile.
SOURCE REVIEWED Washington Post, Coup Attempts Against Aquino open source ↗
The attempt was one of several plots to overthrow Aquino between 1986 and 1987 involving Marcos loyalists and members of the Reform the Armed Forces Movement.
SOURCE REVIEWED Wikipedia, 1986 to 1987 Philippine coup attempts open source ↗

Editorial Note

Date match to the 27 January 1987 GMA seizure led by Canlas. Dataset codes it a military coup with leader unharmed, accurate for Aquino. Well documented. Third Philippines record in this batch.

Cross-Reference

Datasets agree. At least two of the three reference datasets we check against carry this event, and none of them disagrees about its date or its result.

Identifiers for finding this same event in the other datasets:

Cline Center id
84001271987
Albrecht/Koehler/Schutz (CAM) id
CAM-840-1987-01-27

How the match is made is described in crossref-report.md.

Outcome and Target

Coup Atlas research identifies the target as: President Corazon Aquino defeated the January 1987 seizure of the GMA broadcast complex by Canlas's rebels.

Baseline coding: Coup attempt failed to remove the incumbent. Recorded leader fate: remained in office; not physically harmed. The baseline file does not name individual targets; researched names are kept in a separate layer.

Baseline Dataset Citation

Cline Center Coup d’État Project Dataset, v2.2.2
Peyton, Buddy, Joseph Bajjalieh, Michael Martin, and Andrea Gerald. 2026. Cline Center Coup d’État Project Dataset. Cline Center for Advanced Social Research. V.2.2.2. February 17. University of Illinois Urbana-Champaign. doi: 10.13012/B2IDB-9651987_V10
⚑ This citation establishes the coded baseline record; use the claim-level sources above for the researched narrative.

Baseline Source-Document Entries

CSP

Named in the baseline source document; no article citation was recorded.

Wikipedia

Washington Post

“Pro-Marcos Forces Attempt Coup: Coup Attempted by Forces Loyal to Exiled Marcos,” by Keith Richburg, January 27, 1987

Irish Times

“Aquino promises retribution after coup plot fails,” by Tom Fawthrop, January 28, 1987

This is the citation trail carried by the baseline dataset, grouped by outlet and rejoined from the line-wrapped original. Coup Atlas has not independently re-checked every document; read the original before citing a specific claim. URLs the import damaged beyond safe repair are shown as plain text and listed in citations-report.md. How this list is built →

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