# N525TW: 1968 Learjet 25, registration cancelled 2018-03-30

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: March 30, 2018
- Status when cancelled: Registration expired, pending cancellation
- Airframe: [Learjet 25](https://openairdocs.org/model/learjet-25) (registry code 5170506)
- Engine: [GE CJ610-5&6](https://openairdocs.org/engine/ge-cj610-5-6) (registry code 30013)
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) (OpenAirDocs)
- Serial number: 011
- Year built: 1968
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-jet
- Airworthiness: Standard, transport
- Airworthiness date: January 20, 1987
- Certificate issued: July 1, 1996
- Last registry action: May 16, 2014
- Mode S code: A69D3F
- Owner when cancelled: [Sierra American Corporation](https://openairdocs.org/faa-owner/SIERRA%20AMERICAN%20CORPORATION)
- Location: [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington)
- Owner type: Corporation
- Owner's area on the map: 39.7376° N, 75.6671° W: Placed by OpenAirDocs at the center of ZIP code 19808, within about 2 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N525TW
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=525TW
- Page: https://openairdocs.org/deregistered/N525TW-2018-03-30

From the FAA registry file of November 5, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Learjet 25: https://openairdocs.org/model/learjet-25.md

## Service difficulty reports (5)

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model.

- [SDR HAEA200800205A](https://openairdocs.org/sdr/HAEA200800205A), Nov 10, 2008: PUMP. FAILED. ENGINE RPM ROLLED BACK FL430 PLUS 30 MINUTES. AIRCRAFT DESCENDED TO FL 150 AND DIVERTED TO GSP. MAINTENANCE DISCOVERED ENGINE DRIVEN FUEL PUMP FAILED. REPLACED 
- [SDR 00111](https://openairdocs.org/sdr/00111), Sep 10, 2003: CONTROLLER. INOPERATIVE. PILOT REPORTED PRESSURIZATION PROBLEMS CABIN ALTITUDE INCREASING WITH ALTITUDE, RETURN TO DEPARTURE AIRPORT. WILL UPDATE REPORT AFTER MAINTENANCE. REMOVED AND R
- [SDR 00034](https://openairdocs.org/sdr/00034), Jul 11, 2002: ENGINE. FLAMED OUT. AIRCRAFT EN ROUTE FROM ADDISON TX TO WINDSOR CANADA RT ENGINE FLAME-OUT CLIMBING FROM 390 TO 410. RESTART NORMAL, CLIMB BACK TO 410 AND CONTINUED TRIP. PILOT IN
- [SDR 00029](https://openairdocs.org/sdr/00029), May 29, 2002: ENGINE. FLAMED OUT. ACFT ROUTE FROM FNT TO ADS CLIMBING THROUGH FL398 FOR FL430 RT ENGINE FLAME-OUT, REQUEST LOWER ALT FL260. ENGINE RESTARTED AND CLIMB BACK TO FL390 PROCEEDED TO 
- [SDR 00017](https://openairdocs.org/sdr/00017), Apr 19, 2002: SQUAT SWITCH. OUT OF ADJUST. AIRCRAFT DEPARTED YIP, SELECTED GEAR UP, MAIN GEAR DOOR RED LIGHTS STAYED ON. RETURNED TO DEPARTURE AIRPORT. MAINTENANCE FOUND RT SQUAT SWITCH OUT OF ADJUSTMENT

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