# Incident 20040827027429I: Boeing 757222, August 27, 2004

- Type: FAA incident report (Accident/Incident Data System), as reported
- Date: August 27, 2004, 12:04 local time
- Damage: Minor damage
- Phase of flight: Normal Cruise
- Operating rules: Air carrier (Part 121)
- Operator: UALA
- Location: 47.4444° N, 122.3311° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=47.4444&lon=-122.3311&mi=10
- Aircraft: N526UA, a cancelled registration (https://openairdocs.org/deregistered/N526UA-2019-02-23) (OpenAirDocs)
- Registry model: Boeing 757-222 (registry code 1384956, https://openairdocs.org/model/boeing-757-222) (OpenAirDocs)
- Registry engine: Pratt & Whitney PW2040 (registry code 52121, https://openairdocs.org/engine/pratt-whitney-pw2040) (OpenAirDocs)
- Reported make and model: BOEING 757222
- Fatal injuries: 0
- NTSB investigation: [NTSB SEA04IA175](https://openairdocs.org/ntsb/SEA04IA175) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20040827027429I

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23) UALA FLIGHT YVR-ORD DIVERTED TO SEATTLE-TACOMA AIRPORT BECAUSE OF A FLIGHT CONTROL VIBRATION. THE AIRCRAFT LANDED WITHOUT INCIDENT. INSPECTION OF THE AIRCRAFT REVEALED DAMAGE TO THE TRAILING EDGE WEDGE (ALUMINUM & HONEYCOMB) OF THE #6 SLAT, ADDITIONAL DAMAGE WAS DONE TO THE TOP OF THE WING BEHIND #6 SLATE (GLASS FABRIC HONEYCOMB). A 8"-18" PIECE OF THE TRAILING EDGE WEDGE HAD BROKEN AWAY. THE WING PANELS HAD A 8" SPAN WISE CRACK AND A 6" HOLE WHICH HAD THE HONEYCOMB CORE MISSING. THE MOVEMENT OF THE SLAT HAD MADE HEAVY RUB MARKS ON THE WING SKIN. THE TOP OF THE SLAT SHOWED EVIDENCE OF DISBOND OF THE ALUMINUM SKIN FROM THE HONEYCOMB CORE. UNITED AIRLINES MAINTENANCE RECORDS INDICATE #6 SLAT WAS INSTALLED ON 07-2003. UNABLE TO DETERMINE IF THE INSTALLED SLAT WAS NEW OR HAD BEEN REPAIRED. INJURY SUMMARY NOT KNOWN BY ASI.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA04IA175](https://openairdocs.org/ntsb/SEA04IA175), Aug 27, 2004: Boeing 757-200 (N526UA), Richmond, BC, Canada, incident, minor damage. Probable cause: The slat was impacted by birds after takeoff and subsequently the slat delaminated due to flight loads.

## Other reports on N526UA (3)

Matched to the same aircraft by N-number and date.

- [Incident 20110926028409I](https://openairdocs.org/incident/20110926028409I), Sep 26, 2011: Boeing 757-222 (N526UA), Denver, CO, Minor damage. On September 26, 2011, 1637 mountain daylight time, a Boeing B-757-222, registration number N526UA, operated by united air lines (ual) as flight 909, and…
- [Accident 20110531013149A](https://openairdocs.org/incident/20110531013149A), May 31, 2011: Boeing 757-222 (N526UA), Los Angeles, CA, Minor damage. During push-back for takeoff, towbar pin sheared and aircraft nose wheel rolled over a ground crewmember's foot.
- [Incident 20070524016189I](https://openairdocs.org/incident/20070524016189I), May 24, 2007: Boeing 757222 (N526UA), Newark, NJ, No damage. (-23) Ual 90 sfo-ewr departed with 51,600 lbs of fuel of which only 1600 lbs was for holding. Regulatory reserve fuel was 5000 lbs, with no alternate fuel…

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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