FRIDAY, JULY 19

The Navy begins to run sonar scans back and forth across the ocean floor.

* Fingerprint experts, three pathologists and 25 dentists arrive at the Suffolk County medical examiner’s office.

* Bad weather haults search; No more bodies found.

SATURDAY, JULY 20

* Sonar locates a “trail of material on the ocean bottom”--presumed to be the plane.

* Choppy waters slow the search.

* New York Sen. Alfonse M. D’Amato says “The likelihood of mechanical failure is minimal.” No more bodies found.

SUNDAY, JULY 21

* The investigation is moving along at a “fast idle,” according to FBI Assistant Director James K. Kallstrom.

MONDAY, JULY 22

* Noon memorial service for families held on Fire Island.

* Investigators at the FBI’s forensics lab in Washington begin examining debris for signs of damage cause.

* About 1 p.m., large portions of the plane are discovered, as well as a 10-mile-long “debris field”; six more bodies recovered.

* 57 bodies identified.

TUESDAY, JULY 23

* 108 bodies recovered to date; 77 identified.

WEDNESDAY, JULY 24

* Shortly before 11:20 p.m., cockpit voice recorder and flight-data recorder are found by using a robotic camera.

* 113 bodies recovered to date; 95 identified.

THURSDAY, JULY 25

* Cockpit voice recorder ends with an unidentified sound only a fraction of a second long.

FRIDAY, JULY 26

* Officials break down information from air traffic radar facilities.