# Tecnam Service Bulletin 738-CS: No revision named - Rights: © Tecnam. Filed by the FAA in regulations.gov docket FAA-2025-2266; AD 2025-17-13 incorporates this document by reference. Not covered by OpenAirDocs’ CC0 dedication. - Document: [Tecnam Service Bulletin 738-CS](https://openairdocs.org/service-documents/tecnam/738-cs.md) - Title as filed: TECNAM Service Bulletin SB 738-CS-Ed 1 Rev 2 - Pages: 6 - PDF: https://openairdocs.org/files/sha256/1c/2e/1c2e6c0d243aa34c8c520b2563647499e3f5e33f575c787f83b7b226bcd39903 - Page: https://openairdocs.org/service-documents/tecnam/738-cs/file/1c2e6c0d243a ## Text Some pages are OCR from a scan. OCR can misread letters and numbers. Each page's text from the PDF; open the PDF at a page with #page=N. ### Page 1 SERVICE BULLETIN N° SB 738 – CS – Ed. 1 Rev. 2 Original date: 29 02 2024 Rev.2 date: 05/07/2024 The technical content of this document is approved under the authority of DOA ref. EASA.21J.335 Approval No: DO-738-240229 Page 1/6 Edition 1 Rev.2 MOD. PD-006-03 rev.3 data: 04/05/20 SERVICE BULLETIN MANDATORY by the AD No. yyyy-xxxx May become MANDATORY after EASA evaluation RECOMMENDED …………………………. INFORMATION ………………………………………… SUBJECT: P-Mentor Seat Rails inspection SCOPE: Following the receipt of an occurrence report, Tecnam mandates an inspection of P-Mentor seat rails. This inspection must be conducted within the compliance timeframe specified below to assess the rails condition, wear and locking system interference, which could poten- tially result in seat unlocking. The required inspection instructions are reported in Appen- dix A of this document. At the same time, before each flight operations, pilots are reminded of the crucial importance of verifying the correct seat locking after any adjustment. A Note in AFM page will be included in next AFM issue, see Appendix A. APPLICABILITY: All P-Mentor SN below: SN 1003 to 1056; and SN 1064 to 1075; and SN 1078 to 1082, including 1089, 1090, 1118, 1119, 1124, 1125, 1126. Note: If the following design changes are applied: -MOD2002/339 or SB-748-CS is applied in aircraft con- figuration, the purpose of this SB is already addressed TIME OF COMPLIANCE: First inspection: within the next 5FH or 1 week (WOF) Subsequent inspection: every 100FH. MANPOWER: 1 hr REQUIRED MATERIAL: Nil. TOOLING: Nil. WEIGHT AND BALANCE: Nil. REFERENCES: AMM P-Mentor Last issue PUB. AFFECTED: Nil ### Page 2 SERVICE BULLETIN N° SB 738 – CS – Ed. 1 Rev. 2 Original date: 29 02 2024 Rev.2 date: 05/07/2024 The technical content of this document is approved under the authority of DOA ref. EASA.21J.335 Approval No: DO-738-240229 Page 2/6 Edition 1 Rev.2 MOD. PD-006-03 rev.3 data: 04/05/20 SERVICE BULLETIN For further information please contact TECNAM: • Technical Support: o Email: technical.support@tecnam.com Appendix A N Accomplishment Instructions 1 Park the airplane in safe area; 2 Master Switch OFF and Parking brake ON; 3 Remove the seats (Refer to AMM ATA-25-10 Seat removal procedure); 4 Moreover, verify and eliminate potential locking system interference caused by contact with the seat covering (see figure 2). Trim as needed to ensure the retaining pin and spring move freely within their path. Note: Such interference could trigger partial Locking of the Pin, potentially leading to seat un- locking issues, as well as wear on the seat guides' surface. 5 Using a magnifying glass and a concentrated light, visually inspect the seat rails holes (particularly LH rail on Left seat and RH rail on RH seat) for deformation and excessive wear (see figure 1). If deformation or abnormalities are detected, please report the inspection result to Tecnam through the Form below; 6 If no issue is detected, re-install the seats (Refer to AMM ATA-25-10 Seat installation procedure) and perform seat locking operation paying attention that locking lever back down in released position and seat is properly locked. ### Page 3 SERVICE BULLETIN N° SB 738 – CS – Ed. 1 Rev. 2 Original date: 29 02 2024 Rev.2 date: 05/07/2024 The technical content of this document is approved under the authority of DOA ref. EASA.21J.335 Approval No: DO-738-240229 Page 3/6 Edition 1 Rev.2 MOD. PD-006-03 rev.3 data: 04/05/20 SERVICE BULLETIN Figure 1 Damaged seat rails. WRONG INSTALLATION Figure 2 locking system interference. ### Page 4 SERVICE BULLETIN N° SB 738 – CS – Ed. 1 Rev. 2 Original date: 29 02 2024 Rev.2 date: 05/07/2024 The technical content of this document is approved under the authority of DOA ref. EASA.21J.335 Approval No: DO-738-240229 Page 4/6 Edition 1 Rev.2 MOD. PD-006-03 rev.3 data: 04/05/20 SERVICE BULLETIN CORRECT INSTALLATION Figure 3 Seat locking system. ### Page 5 SERVICE BULLETIN N° SB 738 – CS – Ed. 1 Rev. 2 Original date: 29 02 2024 Rev.2 date: 05/07/2024 The technical content of this document is approved under the authority of DOA ref. EASA.21J.335 Approval No: DO-738-240229 Page 5/6 Edition 1 Rev.2 MOD. PD-006-03 rev.3 data: 04/05/20 SERVICE BULLETIN REPORT TO SERVICE BULLETIN 738-CS AIRPLANE DATA Airplane Serial Number: _________________ Airplane Registration: _________________ Airplane Operator: _________________ Hours of operation of airplane: _________________ Inspection was carried out on date ______________ Attach pictures of the inspection ### Page 6 (OCR) •TECNAM SERVICE BULLETIN QUALITY AIRCRAFT SINCE 1948 N° SB 738 - CS - Ed. 1 Rev. 2 Original date: 29 02 2024 Rev.2 date: 05/07/2024 The technical content of this document is approved under the authority of DOA ref. EASA.21J.335 Approval No: DO-738-240229 Page 6/6 Appendix A «TECNAM P-Mentor - Aircraft Flight Manual Page 4 - 9 4. Checklist better locate the aircraft headsets plugs. NOTE The map lights and instrument dimming meostats are not directly illuminated. In preparation for or during dusk and night operations, it is recommended to gradually set the desired level of brightness as the ambient lighting conditions change In addition, maintaining the left map light at an appropriate level of brightness and orientation throughout the ground operations and flight, allows to better locate unilluminated items in the cockpit without impairing night vision. However, with very little cockpit familiarization time it becomes easy to locate the three rheostats only via tactile cues. 4.1. Before Starting Engine 1. Pre-flight inspection Complete 2. Master switch. ON 3. Instrument light AS REQUIRED 4. Seat position and safety belts. Adjust and assure that the seat is properly locked by trying to slide forward and/or backward without using the adjustment lever. In absence of RH seat occupant: fasten seat belts around the NOTE flight control operation and with rapid egress in an seat so as to prevent any interference with the aeroplane emergency. 5. Flight controls. Operate full stroke checking for movement smoothness, free of play and friction 6. Parking brake (left side central pedestal) CHECK LOCK 7. Propeller Lever FULL FWD 1* Edition - Rev. 10 Section 4 - NORMAL PROCEDURES CHECKLISTS MOD. PD-006-03 rev.3 data: 04/05/20 SERVICE BULLETIN Edition 1 Rev.2 --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.